###pyinstaller打包 python 版本 python3
pip install pypiwin32
pip install pyinstaller
打包 exe 命令 pyinstaller -F -w -i manage.ico app.py
-F ：打包为单文件 -w ： Windows 程序，不显示命令行窗口 -i ：是程序图标， app.py 是你要打包的 py 文件 ###情人节表白助攻—微信记录词云分析
# -*- coding: utf-8 -*-
"""
Created on Tue Jan 17 17:00:15 2017
pip install wordcloudhttps://github.com/amueller/word_cloud http://www.lfd.uci.edu/~gohlke/pythonlibs/#wordcloud
@author: hhl
"""
#首先加载所需的各种库
import re
import requests
import time
import numpy as np
import codecs
import pandas
from lxml import etree
#import seaborn as sns
import jieba
import os
from wordcloud import WordCloud
import matplotlib.pyplot as plt
%matplotlib inline
#遍历文件中的数据
file=codecs.open(u"Msg_new666_20170211.html",'r')
html=file.read()
file.close()
#通过相应规则整理数据
item_pattern = re.compile(
r'<SPAN class="MsgHistory">(.*?)</SPAN>',
re.S)
def parse_askitem(page):
info = re.findall(item_pattern, page)
return info
items_list = parse_askitem(html)
对list进行处理，取出文字类型的数据并汇总到一个content中
content_list = []
for item in items_list:
#print(item)
if ('.' not in item)&(';' not in item):
content_list.append(item)
content =""
for con in content_list:
content = content + con
#print(len(content))
#分词
segment = []
segs = jieba.cut(content)
for seg in segs:
if len(seg) > 1 and seg!='\r\n':
segment.append(seg)
#去停用词
words_df=pandas.DataFrame({'segment':segment})
words_df.head()
#stopwords=pandas.read_csv("stopwords.txt",index_col=False,quoting=3,sep="\t",names=['stopword'])#quoting=3全不引用
#stopwords.head()
#words_df=words_df[~words_df.segment.isin(stopwords.stopword)]
ancient_chinese_stopwords=pandas.Series([#'的',
#'其','或','亦','方','于','即','皆',
#'因','仍','故','尚','呢','了','的','着',
'" "'])
words_df=words_df[~words_df.segment.isin(ancient_chinese_stopwords)]
#统计词频
words_stat=words_df.groupby(by=['segment'])['segment'].agg({"number":np.size})
words_stat=words_stat.reset_index().sort_values(by="number",ascending=False)
#照片做词云
from scipy.misc import imread
import matplotlib.pyplot as plt
from wordcloud import WordCloud,ImageColorGenerator
bimg=imread('timefriends_lcz.jpg')
wordcloud=WordCloud(background_color="white",mask=bimg,font_path='msyh.ttf')
wordcloud=wordcloud.fit_words(words_stat.head(39769).itertuples(index=False))
bimgColors=ImageColorGenerator(bimg)
plt.figure(figsize=(20,15))
plt.axis("off")
plt.imshow(wordcloud.recolor(color_func=bimgColors))
plt.show()
#==========================中文显示乱码问题===========================================
import matplotlib
zhfont1 = matplotlib.font_manager.FontProperties(fname='msyh.ttf')
# 设置显示中文
matplotlib.rcParams['font.sans-serif'] = ['msyh'] #指定默认字体
matplotlib.rcParams['axes.unicode_minus'] = False #解决保存图像是负号'-'显示为方块的问题
from matplotlib.font_manager import FontProperties
font = FontProperties(fname=r"msyh.ttc", size=14)
words_stat[:20].plot(y='number', kind='bar')#x='segment', 中文未能正常显示
words_stat[:20].plot(x='segment', y='number', kind='bar')#中文未能正常显示from pyquery import PyQuery as pq
doc = pq(filename='hello.html')
from lxml import etree
doc = pq(etree.fromstring("<html></html>"))
p = pq('<p id="hello" class="hello"></p>')('p')
print p.append(' check out <a href="http://reddit.com/r/python"><span>reddit</span></a>')
print p.prepend('Oh yes!')
d = pq('<div class="wrap"><div id="test"><a href="http://cuiqingcai.com">Germy</a></div></div>')
p.prependTo(d('#test'))
print p
print d
d.empty()
print d
###使用Python绘制图表
import matplotlib.pyplot as plt
import numpy as np
mu = 100
sigma = 20
x = mu + sigma * np.random.randn(20000) # 样本数量
plt.hist(x,bins=100,color='green',normed=True) # bins显示有几个直方,normed是否对数据进行标准化
plt.show()
#container {
display: flex;
flex-direction: column;
}<html>
<head>
<meta charset="utf-8">
<meta http-equiv="refresh" content = "5">
</head>
<body>
<?php
$fp = file("out.log");
if ($fp) {
for($i = count($fp) - 1;$i >= 0; $i --)
echo $fp[$i]."<br>";
}
?>
</body>
</html>
5秒刷新一次网页来查看最新的日志。
<?php
$ph = popen('tail -n 100 out.log','r');
while($r = fgets($ph)){
echo $r."<br>";
}
pclose($ph);
?>
###程序员工作
#https://link.zhihu.com/?target=https%3A//github.com/ipreacher/tricks
coding(不会or会);
function coding(不会or会) {
if(不会){
for(搜索结果 in google){
if(搜索结果==貌似可以){
ctrl+c;
ctrl+v;
ctrl+s;
if(checkin==false){
coding(不会);
}else{
break;
}
}
}
}else{
看看微博;
doing;
看看知乎;
doing;
看看朋友圈;
doing;
看看github;
if(checkin==false){
coding(不会);
}
}
}
while (还在微软)
{
while (任务没完成)
{
do
{
写点代码
编译一下
上知乎回答10个问题
看了一眼还没编译好
上知乎再回答10个问题
} while (编译没通过);
运行
}
发code review
下班去google接老婆
do
{
checkin
上知乎再回答50个问题
下班去google接老婆
} while (checkin没成功);
}
__author__ = 'ipreacher'
import zhihuapi as api
with open('cookie') as f:
api.cookie(f.read())
# 拉取并打印关注者的基本信息，包括序号及其个性域名、昵称、赞同数、感谢数、关注人数
def ff():
for i in range(len(r2)):
r3 = api.user(r2[i]).detail()
r4 = [i, r3['urlToken'], r3['name'], r3['voteupCount'], r3['thankedCount'], r3['followerCount']]
r5.append(r4)
print(r4)
#print(r5)
import zhihuapi as api
#请求知乎，复制request header的Cookie: 字段
with open('cookie') as f:
api.cookie(f.read())
data = api.user('zhihuadmin').profile()
print(data)
{
"url_token": "zhihuadmin",
"avatar_url": "https://pic3.zhimg.com/34bf96bf5584ac4b5264bd7ed4fdbc5a_is.jpg",
"avatar_url_template": "https://pic3.zhimg.com/34bf96bf5584ac4b5264bd7ed4fdbc5a_{size}.jpg",
"type": "people",
"name": "知乎小管家",
"headline": "欢迎反馈问题和建议！",
"is_org": false,
"url": "https://www.zhihu.com/people/zhihuadmin",
"badge": [
{
"type": "identity",
"description": "知乎官方帐号"
}
],
"user_type": "people",
"is_advertiser": false,
"id": "3d198a56310c02c4a83efb9f4a4c027e"
}
###用PHP做爬虫相当简单
https://my.oschina.net/eechen/blog/745224
接口1: php -S 127.0.0.1:8080 -t /home/eechen/www
接口2: php -S 127.0.0.2:8080 -t /home/eechen/www
/home/eechen/www/index.php:
<?php
header('Content-Type: application/json; charset=utf-8');
echo json_encode(array('SERVER_NAME' => $_SERVER['SERVER_NAME']));
//串行访问需要sum(2,1)秒,并行访问需要max(2,1)秒.
($_SERVER['SERVER_NAME'] == '127.0.0.1') ? sleep(2) : sleep(1);
?>
并行发出多个请求:
<?php
$url[] = 'http://127.0.0.1:8080';
$url[] = 'http://127.0.0.2:8080';
$mh = curl_multi_init();
foreach($url as $k => $v) {
$ch[$k] = curl_init($v);
curl_setopt($ch[$k], CURLOPT_HEADER, 0); //不输出头
curl_setopt($ch[$k], CURLOPT_RETURNTRANSFER, 1); //exec返回结果而不是输出,用于赋值
curl_multi_add_handle($mh, $ch[$k]); //决定exec输出顺序
}
$running = null;
$starttime = microtime(true);
//执行批处理句柄(类似pthreads多线程里的start开始和join同步)
do {
//CURLOPT_RETURNTRANSFER如果为0,这里会直接输出获取到的内容.
//如果为1,后面可以用curl_multi_getcontent获取内容.
curl_multi_exec($mh, $running);
//阻塞直到cURL批处理连接中有活动连接,不加这个会导致CPU负载超过90%.
curl_multi_select($mh);
} while ($running > 0);
echo microtime(true) - $starttime."\n"; //耗时约2秒
foreach($ch as $v) {
$json[] = curl_multi_getcontent($v);
curl_multi_remove_handle($mh, $v);
}
curl_multi_close($mh);
var_export($json);
//输出:
2.0015449523926
array (
0 => '{"SERVER_NAME":"127.0.0.1"}',
1 => '{"SERVER_NAME":"127.0.0.2"}',
)
curl http://www.topit.me/|grep -P "http:[^>]*?(jpg|gif)" -o|xargs wget
这就是一个正则搜索url中以http开头 jpg或gif结尾的字符串，使用wget下载的例子document.addEventListener('DOMContentLoaded', function() {
let app = document.getElementById('todo-app');
let items = app.getElementsByClassName('item');
// attach event listener to each item
for (let item of items) {
item.addEventListener('click', function() {
alert('you clicked on item: ' + item.innerHTML);
});
}
});
document.addEventListener('DOMContentLoaded', function() {
let app = document.getElementById('todo-app');
// attach event listener to whole container
app.addEventListener('click', function(e) {
if (e.target && e.target.nodeName === 'LI') {
let item = e.target;
alert('you clicked on item: ' + item.innerHTML);
}
});
});
const arr = [10, 12, 15, 21];
for (var i = 0; i < arr.length; i++) {
// pass in the variable i so that each function
// has access to the correct index
setTimeout(function(i_local) {
return function() {
console.log('The index of this number is: ' + i_local);
}
}(i), 3000);
}
const arr = [10, 12, 15, 21];
for (let i = 0; i < arr.length; i++) {
// using the ES6 let syntax, it creates a new binding
// every single time the function is called
// read more here: http://exploringjs.com/es6/ch_variables.html#sec_let-const-loop-heads
setTimeout(function() {
console.log('The index of this number is: ' + i);
}, 3000);
}###QQ聊天记录数据分析
#定义数据框和变量
data <- data.frame(user_name = c(), datetime = c(), text = c())
user_name <- character()
datetime <- character()
text <- character()
#开始遍历整个文本，取出三列数据
for(i in 5:length(file_data)){
dt_pattern <- regexpr('[0-9]{4}-[0-9]{2}-[0-9]{2} [0-9]+:[0-9]+:[0-9]+',file_data[i])
if(dt_pattern == 1) {
user_begin <- dt_pattern+attr(dt_pattern,'match.length') + 1
user_end <- nchar(file_data[i])
user_name <- substring(file_data[i],user_begin,user_end)
dt_begin <- dt_pattern
dt_end <- dt_pattern+attr(dt_pattern,'match.length')-1
datetime <- substring(file_data[i],dt_begin,dt_end)
text <- file_data[i+1]
data <- rbind(data, data.frame(Name = user_name,datetime = datetime,text = text))
}
}
#字段类型转换
data$user_name <- as.character(data$Name)
data$text <- as.character(data$text)
data$datetime <- as.POSIXlt(data$datetime)
#取出时间戳（datetime）的年、月、日、时、分、秒部分
data <- transform(data,
year = datetime$year+1900,
month = datetime$mon+1,
day = datetime$mday,
hour = datetime$hour,
min = datetime$min,
sec = datetime$sec)
data$datetime <- as.character(data$datetime)###关于反爬虫
from selenium import webdriver
from selenium.webdriver.common.keys import Keys #
from selenium.webdriver.support.ui import WebDriverWait # WebDriverWait的作用是等待某个条件的满足之后再往后运行
from selenium.webdriver import ActionChains
import time
import sys
driver = webdriver.PhantomJS(executable_path='C:\PyCharm 2016.2.3\phantomjs\phantomjs.exe') # 构造网页驱动
driver.get('https://www.zhihu.com/#signin') # 打开网页
driver.find_element_by_xpath('//input[@name="password"]').send_keys('your_password')
driver.find_element_by_xpath('//input[@name="account"]').send_keys('your_account')
driver.get_screenshot_as_file('zhihu.jpg') # 截取当前页面的图片
input_solution = input('请输入验证码 :')
driver.find_element_by_xpath('//input[@name="captcha"]').send_keys(input_solution)
time.sleep(2)
driver.find_element_by_xpath('//form[@class="zu-side-login-box"]').submit() # 表单的提交 表单的提交，即可以选择登录按钮然后使用click方法，也可以选择表单然后使用submit方法
sreach_widonw = driver.current_window_handle # 用来定位当前页面
# driver.find_element_by_xpath('//button[@class="sign-button submit"]').click()
try:
dr = WebDriverWait(driver,5)
# dr.until(lambda the_driver: the_driver.find_element_by_xpath('//a[@class="zu-side-login-box"]').is_displayed())
if driver.find_element_by_xpath('//*[@id="zh-top-link-home"]'):
print('登录成功')
except:
print('登录失败')
driver.save_screenshot('screen_shoot.jpg') #截取当前页面的图片
sys.exit(0)
driver.quit() #退出驱动
import requests
proxies = { "http": "http://10.10.1.10:3128",
"https": "http://10.10.1.10:1080",}
p = request.get("http://www.baidu.com", proxies = proxies)
print(p.content.decode('utf-8'))###R语言如何画个性化词云图
wordcloud2(demoFreq, size = 1,shape='star')
wordcloud2(demoFreqC, size = 1.55,figPath =log)
#字符表
mstr='abcdefghijklmnopqrstuvwxyz'
#字符表长度
lengthM=len(mstr)
#strs为输入的明文，shitf为移动的位数
def caesar(strs,shift):
newstrs =''
for x in strs:
#获取x字符在mstr中的位置
numX=mstr.index(x)
#新的字符位置加上shift
numX=(numX+shift)%lengthM
newstrs=newstrs+mstr[numX]
return newstrs
if __name__ == '__main__':
strs = raw_input("Enter character sequence:")
shift = input("Shift Numbers:")
C=caesar(strs,shift)
print("CiperText:",C)
print("PlainText:",caesar(C,int(shift)*(-1)))function add(x){
var num = x;
function _add(para){
num+=para;
return _add;
}
_add.toString=function(){
return num;
}
return _add;
}
var a = add(1)(2)(3);
console.log(a);//6
console.log((a+7));//13
console.log(a(11));//17
function add(x){
var num = x;
function _add(para){
num+=para;
return _add;
}
_add.log=function(){
return num;
}
return _add;
}
var a = add(1)(2)(3);
console.log(a);
a.log()
在执行a+7的时候 会自动调用toString 以下展示了这个情况
var a = function() {return 3}
a + 7
// "function () {return 3}7"
a.toString = function() {return 3}
a + 7
// 10
console.log函数需要把变量转换成字符串打印，所以会首先调用变量的toString方法的，你把_add.toString换成_add.log再试试就不会自动打印出结果了，就会是函数了，除非再手动调用log###单点登录
www.baidu.com （调用者）
tieba.baidu.com （调用者）
pic.baidu.com （调用者）
login.baidu.com （服务者）。
对于各个模块之间应该保持充分的独立性
单点登陆实现方案吧：
某个项目登陆成功，广播其他注册的项目进行登陆操作[写session的操作]
某个项目登陆成功，url会携带一个ticket，各个项目通过解析ticket获取uid进行写session操作###微信扫码关注 1、网站里每次都生成一个带参数的公众号二维码（临时） 2、用户用微信扫码后关注，服务端获取到关注事件以及该用户和参数二维码标识。 3、服务端返回内容，提示输入Y 4、网页端根据服务端获取到的事件进行后续处理。 ###nodejs做一个简易的tcp聊天程序
var net=require('net');
var count=0, users={};
var server=net.createServer(function(conn){
conn.write(
'\n\r > welcome to\033[92m node-chat\033[39m !'+
'\n\r > '+count+' other people are connected at this time.'+
'\n\r > please write your name and press enter: '
);
count++;
conn.setEncoding('utf8');
var nickname;
function broadcast(msg, exceptMyself){
for(var i in users){
if(!exceptMyself||i!=nickname){
users[i].write(msg);
}
}
}
var tmp = '';
conn.on('data',function(data){
tmp += data;
if (tmp.indexOf('\n') === -1) {
return;
}
data = tmp.replace(/\r|\n/g, '');
if(!nickname){
if(users[data]){
conn.write('\r\n\033[93m> nickname already in use. try again:\033[39m\r\n ');
tmp='';
return;
}else{
nickname=data;
users[nickname]=conn;
broadcast('\r\n\033[90m> '+nickname+' joined the room\033[39m\r\n');
}
}else{
broadcast('\r\n\033[96m> '+nickname+':\033[39m '+data+'\r\n');
}
tmp='';
});
conn.on('close',function(){
count--;
delete users[nickname];
broadcast('\r\n\033[096m> '+nickname+' left the room\033[39m \r\n');
});
});
server.listen(3000,function(){
console.log('\033[96m server listening on *:3000\033[39m');
});###下拉刷新出来
$(window).scroll(function() {
if ($(this).scrollTop() > 300) {
$('#banner').show();
} else {
$('#banner').hide();
}
});
// 滚动控制返回顶部和漂浮栏出现、隐藏
$(window).scroll(function() {
console.log($(this).scrollTop());
});查询： 主键查询最快，索引查询次之，where条件中有函数再次之；扫描行数越少越快。
插入：根据索引数量，索引越多插入越慢。插入行数越多越慢，因为会导致重建索引。
删除：行数越多越慢，索引数量越多越慢，因为会导致重建索引
更新：同删除，因为索引列数据改变会导致重建索引https://segmentfault.com/q/1010000008299383
修改用户余额前，因为怕修改出问题，意外把用户余额改为0什么的。而选择先插入一条记录到用户账务变动表，然后查出账务变动表的数据，来更新用户余额字段。
// 开始事物
BEGIN ;
// 取出该用户数据，并锁住，防止其他线程（进程）读取该条记录
SELECT * FROM users where id = $id FOR UPDATE ;
// 处理业务...计算用户新的余额
// 更新用户余额
UPDATE users SET money = $new_money;
// 获取影响行数=1,则：{
// 提交事物（解锁我们锁定的记录）
COMMIT ;
}else{
// 发现不对，撤销我们在事物内做的所有操作
ROLLBACK ;
}###Python的参数里的： type hinthttps://www.python.org/dev/peps/pep-0484/ def greeting(name: str) -> str: return 'Hello ' + name ###微信红包算法
function ranAllo(value, min, max, length) {
var ran = [], arrId;
//循环存放数组最小值
for(var i = 0; i < length; i++) {
ran[i] = min;
}
//计算剩下的值
var spare = value - (min * length);
while(spare > 0) {
//生成数组随机ID
arrId = Math.round(Math.random() * length);
if(ran[arrId] < max) {
ran[arrId] += 1;
spare--;
}
}
console.log(ran);
return ran
}###Chrome 调试js时，如何避开各种插件js的干扰
Blackbox Script
###mysql for update 如果事务一直没有提交会不会这表数据一直锁在那里
不会。客户端连接断开后，会自动释放锁。
客户端1
set AUTOCOMMIT = 0; BEGIN； SELECT * FROM articles WHERE id=1 FOR UPDATE ; 客户端2
set AUTOCOMMIT = 0; BEGIN； SELECT * FROM articles WHERE id=1 FOR UPDATE ; 这时，客户端2的查询会卡住。直到客户端1 commit 或 rollback 。但是，如果客户端1直接关闭窗口断开连接，客户端2也能直接拿到锁。说明客户端断开时，会自动释放锁。 ###标签的id中存在# 用双反斜杠转义，即对于id="foo#bar"，用$('#foo\#bar') ###underscore的_.without函数 function without(arr, obj){ arr.splice(arr.indexOf(obj),1) } let arrObj = [obj1,obj2,obj3,obj4]; _.without(arrObj,obj1); console.log(arrObj);//[obj2,obj3,obj4] ###php str_replace替换关键词，如何控制长词优先
function str_replace_once($needle,$replace,$haystack) {
$pattern = '/<img[^>]*>/is';
preg_match_all($pattern, $haystack, $matched);
if(empty($matched[0])){
$pos = strpos($haystack, $needle);
if ($pos === false) {
return $haystack;
}
return substr_replace($haystack, $replace, $pos, strlen($needle));
} else {
$arr = preg_split($pattern, $haystack);
$haystack_new = '';
$replace_time = 0;
foreach($arr as $key => $str){
$pos = strpos($str, $needle);
if ($pos === false || $replace_time > 0 || strpos($str, $needle.'</a>') !== false) {
$haystack_new .= $str;
} else {
$haystack_new .= substr_replace($str, $replace, $pos, strlen($needle));
$replace_time = 1;
}
if(isset($matched[0][$key])) $haystack_new .= $matched[0][$key];
}
return $haystack_new;
}
}
$str0 = 'php技术 是时下最好用的 php'; // 替换成 'java技术 是时下最好用的 编程技术'
$str1 = 'php技术';
$str2 = 'php'
// 比较字符串长短，并组合成数组
function compare(){
$vars = func_get_args();
$list = array();
$len = array();
$rel = array();
// 收集长度 + 对照表
foreach ($vars as $k => $v)
{
$l = mb_strlen($v);
$list[$k] = $l;
$len = $l;
}
$count = count($len);
// 选择排序：对长度进行比较
for ($i = 0; $i < $count; ++$i)
{
$longest = $i;
for ($n = $i + 1; $n < $count; ++$n)
{
if ($len[$i] < $len[$n]) {
$longest = $n;
}
}
if ($i !== $longest) {
$tmp = $len[$i];
$len[$i] = $len[$longest];
$len[$longest] = $tmp;
}
}
// 搜集整理
foreach ($len as $v)
{
$rel[$v] = $list[$v];
}
// 返回最终结果
return $rel;
}
// 队列方式按照长的先替换
$rel = compare($str1 , $str2);
$replace = array('java' , '编程技术');
for ($i = 0; $i < count($rel); ++$i)
{
$str0 = preg_replace($rel[$i] , $replace[$i] , $str0);
}document.write(document.title);
<?php
ob_start(function($buffer){
preg_match('/<title.*>\s*(.*)\s*<\/title>/',$buffer,$str);
return $str[1];
});
?>
<!DOCTYPE html>
<html>
<head>
<title>我是一个title</title>
</head>
<body>
</body>
</html>
<?php
ob_end_flush();
$url = "http://bosonnlp.com/account/login";
$body = (new \GuzzleHttp\Client)->get($url)->getBody()->getContents();
$title = (new \Symfony\Component\DomCrawler\Crawler($body))->filter('title')->text();
var_dump($title);###浏览器打开图片要显示不要下载 查看 head中的类型不是图片images/*而是application/octet-stream 得到的服务端返回的响应头，将Content-Type改成images/*就可以啦 ###输出变量名及变量类型
function var_types() {
$bt = debug_backtrace()[0];
$file = new \SPLFileObject($bt['file']);
$file->seek($bt['line'] - 1);
$line = $file->current();
$matchs = null;
preg_match('/var_types\((.*)\)/', $line, $matchs);
$param_names = array_map('trim', explode(",", $matchs[1]));
$args = func_get_args();
for ($i = 0; $i < count($args); $i++) {
echo $param_names[$i] . ' ' . gettype($args[$i]) . PHP_EOL;
}
}
https://3v4l.org/522df
define('MY_CONSTANT', 1);
$string = "STR";
$num = 123.4;
var_types(MY_CONSTANT, $string, $num, $_GET, $_SERVER['PHP_SELF']);
MY_CONSTANT integer
$string string
$num double
$_GET array
$_SERVER['PHP_SELF'] string$users = [
['id' => 1, 'name' => '小明'],
['id' => 2, 'name' => '小李'],
];
$comment = '@小明 你好，@小李 你也好”中的小明，小李提取出';
$comment = preg_replace_callback('/(@)(.+?)(\s)/', function ($matches) use ($users) {
foreach ($users as $user) {
if ($matches[2] === $user['name']) {
return "<a href='/user/{$user['id']}'>@$matches[2]</a> ";
}
}
return $matches[0];
}, $comment);
var_dump($comment);
// string(111) "<a href='/user/1'>@小明</a> 你好，<a href='/user/2'>@小李</a> 你也好”中的小明，小李提取出"###过滤掉他们的script标签的src属性 $context = <<<EOF
<script src="111"> sss</script><script src="222dd"> ggg</script> <script src="222"> fff</script>EOF;
echo preg_replace('/\ssrc=("[^"]")|('[^\']*')/', '', $context); ###trimArray
function trimArray($str, $charArray)
{
foreach ($charArray as $char) {
$charLength = strlen($char);
if (substr($str, 0, $charLength) === $char) {
// 去掉头部
$str = substr_replace($str, '', 0, $charLength);
}
if (substr($str, 0 - $charLength) === $char) {
// 去掉尾部
$str = substr_replace($str, '', strlen($str) - $charLength, $charLength);
}
}
return $str;
}
$str = '<br />
<p>gwgawegwewgaweg</p><p>awe</p><p>gawe</p><p>we</p><p>awe</p><p>eg</p><br />';
var_dump(trimArray($str,['<br />']));
// string(79) "
<p>gwgawegwewgaweg</p><p>awe</p><p>gawe</p><p>we<br /></p><p>awe</p><p>eg</p>"###安装composer报错，找不到php_pdo_firebird.dll 在PHP7中已经不再支持使用ext/mysql这个扩展了，可以使用mysqli或PDO扩展，详细情况可以看remove deprecated functionality in php7 第二个扩展的问题，这里有解决办法：PHP Startup: Unable to load dynamic library php_pdo_firebird.dll ###Apache的 OpenSSL与PHP的不匹配问题
$encrypted_all='';
$pu_key = openssl_pkey_get_public($this->public_key);
foreach ($cutting_data as $key => $value) {
$encrypted='';
openssl_public_encrypt($value,$encrypted,$pu_key);【这一步报错】
$encrypted = base64_encode($encrypted);
//echo $encrypted;
$encrypted_all=$encrypted_all.$encrypted;
}
由于OpenSSL版本不一致，所以函数库不一样，导致此问题，同步openssl版本进行解决###算法讲解的注解
$row_num = 3;
$rows = [
'abcdefghijkl',
'bcdefghaijkl',
'bcdefghijkla',
];
$orders = [];
foreach ($rows as $row) {
$orders[] = get_order($row);
}###Stack Overflow 2016年度 20个最佳Python问题
https://github.com/mingyun/Coding-Guide/blob/master/Notes/Python/Python%E5%8F%8A%E5%BA%94%E7%94%A8/Python3%E5%8F%8A%E5%BA%94%E7%94%A81-%E5%9F%BA%E7%A1%80.md Python3及应用
$ python -m timeit -s 'import random;a=range(10000);random.shuffle(a)' 'a.sort();a[-1]'
1000 loops, best of 3: 239 usec per loop
$ python -m timeit -s 'import random;a=range(10000);random.shuffle(a)' 'max(a)'
1000 loops, best of 3: 342 usec per loop
>>> 3*0.1
0.30000000000000004
>>> 4*0.1
0.4
>>> from decimal import Decimal
>>> Decimal(3*0.1)
Decimal('0.3000000000000000444089209850062616169452667236328125')
>>> Decimal(4*0.1)
Decimal('0.40000000000000002220446049250313080847263336181640625')
>>> (0.1).hex()
'0x1.999999999999ap-4'
>>> (0.3).hex()
'0x1.3333333333333p-2'
>>> (0.1*3).hex()
'0x1.3333333333334p-2'
>>> (0.4).hex()
'0x1.999999999999ap-2'
>>> (0.1*4).hex()
'0x1.999999999999ap-2'
###自己搭建 Shadowsocks sudo apt-get install python-pip ssserver -c /path/to/shadowsocks.json sudo apt-get install supervisor /etc/supervisor/conf.d 文件夹新建文件 shadowsocks.conf :
[program:shadowsocks] command = ssserver -c /var/shadowsocks/shadowsocks.json user = root autostart = true autoresart = true stderr_logfile = /var/shadowsocks/shadowsocks.stderr.log stdout_logfile = /var/shadowsocks/shadowsocks.stdout.log 然后依次运行即可使 shadowsocks 运行在后台：
sudo supervisorctl reread
sudo supervisorctl update
sudo supervisorctl start shadowsocks ###Python干货：表达式 i += x 与 i = i + x 等价吗
>>> l1 = range(3)
>>> l2 = l1
>>> l2 += [3]
>>> l1
[0, 1, 2, 3]
>>> l2
[0, 1, 2, 3]
>>> l1 = range(3)
>>> l2 = l1
>>> l2 = l2 + [3]
>>> l1
[0, 1, 2]
>>> l2
[0, 1, 2, 3]###MySQL 如何存储长度较大的varchar与blob
CREATE TABLE row (
content varchar(65532) NOT NULL DEFAULT ''
) ENGINE=InnoDB DEFAULT CHARSET=latin1
mysql> insert into row(content) select repeat('a',65532); Query OK, 1 row affected (0.03 sec) Records: 1 Duplicates: 0 Warnings: 0 ###in or效率 select * from table where id in (xxx,xxx,xxx...,xxx) select * from table where id=xxx or id=xxx or id=xxx ... or id=xxx 在InnoDB引擎下，in返回的顺序是按照主键排序的，我以前一直以为是按照in列表里排序好的顺序进行排序的： ###App接入支付宝
https://os.alipayobjects.com/download/secret_key_tools_RSA256_win.zip 下载支付宝提供的工具
https://openhome.alipay.com/doc/sdkDownload.resource?sdkType=PHP 下载php的sdk
<?php
require_once './aop/AopClient.php';
require_once './aop/request/AlipayTradeAppPayRequest.php';
$c = new AopClient;
$c->gatewayUrl = "https://openapi.alipaydev.com/gateway.do";
$c->appId = "2016080100138126";
$c->rsaPrivateKey = '私钥';
$c->format = "json";
$c->charset= "utf-8";
$c->signType= "RSA2";
$c->alipayrsaPublicKey = '支付宝公钥';
$request = new AlipayTradeAppPayRequest ();
$request->setBizContent("{\"timeout_express\":\"30m\",\"product_code\":\"QUICK_MSECURITY_PAY\",\"total_amount\":\"0.01\",\"subject\":\"1\",\"body\":\"我是测试数据\",\"out_trade_no\":\"012114575097325\"}");
echo $c->sdkExecute($request);
?>###递归 //递归的方法 function test(n){ if(n<2){ return 1; } return test(n-1)+test(n-2) } alert(test(9)) //迭代的方法 function test(n){ var num1 = 1; var num2 = 2; var num3 = 0; for(var i=0;i<n-2;i++){ num3 = num1 + num2; num1 = num2; num2 = num3; } } alert(test(9)) ###图片相似度算法算出匹配度
<?php
/**
* Created by PhpStorm.
* User: shellus
* Date: 2017-02-12
* Time: 19:34
*/
require 'vendor/autoload.php';
use Intervention\Image\ImageManager;
// create an image manager instance with favored driver
$manager = new ImageManager(array('driver' => 'gd')); // imagick
// to finally create image instances
$img = $manager->canvas(800, 100, '#fff');
$img->text('蛙蛙脾气', 0, 0, function(\Intervention\Image\AbstractFont $font) {
$font->file('src/fonts/msyhbd.ttc');
$font->size(100);
$font->color('#000');
$font->valign('top');
});
$img->text('娃娃脾气', 0, 0, function(\Intervention\Image\AbstractFont $font) {
$font->file('src/fonts/msyhbd.ttc');
$font->size(100);
$font->color('#ff0');
$font->valign('top');
});
$img->save('bar.png');###单页整站导航点击滚动
<div class='nav-left'>
<div data-to='content1'><\div>
<div data-to='content2'><\div>
<\div>
<div class='content1'>
<div class='content2'>
$('.nav-left').on('click','div',function(e){
//console.log(e);
var target = e.target;
var div = $(target).data("to");
//console.log(div);
$('html,body').animate({scrollTop:$('.'+div).offset().top}, 800);
});###hexo搭建个人博客如何设置自定义的页面为主页 首先，我用的hexo 3.2.2版本，要使用自定义页面为主页，就得确保node_modules里没有hexo-generator-index模块，如果有请删除掉；（这个是用来渲染主页的，要自定义就不需要对吧） 然后，如果细心你会发现themes/your_themes_name/source/这个目录里的文件，在你每次hexo g的时候都会全部复制，所以接下来就简单了，只需要把你的项目放到这个里面就OK了（自定义的index.html得在哈，也就是source目录做你项目的根目录） 做完上面两步就可以看到自己自定义的主页了 ###【ipv6惹的祸】curl 超时
Operation timed out after 0 milliseconds with 0 out of 0 bytes received
Resolving timed out after 5514 milliseconds
wget www.domain.com
--2016-11-19 22:17:30-- http://www.domain.com/
Resolving www.domain.com... # 此处停滞约 5 秒
xxx.xxx.xxx.xxx
Connecting to www.domain.com|xxx.xxx.xxx.xxx|:80... connected.
HTTP request sent, awaiting response... 200 OK
只需要加上下面一句即可解决延迟问题（指定使用IPV4）
curl_setopt($ch, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V4 );###权限修饰符的问题
class count(){
public $a = 0;
public $b = 0;
public function setNumber($a,$b){
$this->a = $a;
$this->b = $b;
echo $this->compute();
}
private function compute(){
return $this->a/$this->b;
}
}
$obj = new count();
$obj->setNumber(1,2);
$obj = new count();
$obj->compute();
$obj->setNumber(1,2);
问题出现了。由于开始我们给变量a和b都设置了值为0，那么除数岂不是出现了0.更加容易出错setTimeout(function(){
$.ajax({
url:"/error/ad_log",
type:'post',
data:{
'content': $("html").html(),
'url':window.location.href
},
success:function(){
}
});
},3000);
<meta http-equiv="Content-Security-Policy" content="script-src 'self'">
Content-Security-Policy:
script-src 'unsafe-inline' 'unsafe-eval' 'self' *.vincentguo.cn *.yunetidc.com *.baidu.com *.cnzz.com *.c-cnzz.com *.duoshuo.com *.jiathis.com;report-uri /error/csphttps://github.com/apanly/dream/tree/master/common/service/oauth
ClientService.php 统一第三方登录方法，应用程序的方法入口
GithubService.php Github第三方登录相关方法
QqService.php QQ第三方登录相关方法
WeiboService.php 微博第三方登录相关方法
CREATE TABLE `user` (
`uid` int(11) unsigned NOT NULL AUTO_INCREMENT COMMENT '用户uid',
`nickname` varchar(20) NOT NULL DEFAULT '' COMMENT '用户昵称',
`unique_name` varchar(60) NOT NULL DEFAULT '' COMMENT '唯一标识',
`avatar` varchar(500) NOT NULL DEFAULT '' COMMENT '用户头像',
`mobile` varchar(11) NOT NULL DEFAULT '' COMMENT '用户手机号码',
`updated_time` timestamp NOT NULL DEFAULT '0000-00-00 00:00:00' COMMENT '最后一次更新时间',
`created_time` timestamp NOT NULL DEFAULT '0000-00-00 00:00:00' COMMENT '插入时间',
PRIMARY KEY (`uid`),
UNIQUE KEY `idx_name` (`unique_name`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COMMENT='用户表';
CREATE TABLE `oauth_token` (
`id` int(11) unsigned NOT NULL AUTO_INCREMENT,
`client_type` varchar(20) NOT NULL DEFAULT '' COMMENT '客户端来源类型',
`token` varchar(100) NOT NULL DEFAULT '',
`note` varchar(1000) NOT NULL DEFAULT '' COMMENT '备注',
`valid_to` timestamp NOT NULL DEFAULT '0000-00-00 00:00:00' COMMENT '有效期截止日期',
`updated_time` timestamp NOT NULL DEFAULT '0000-00-00 00:00:00' COMMENT '最后一次更新时间',
`createdt_time` timestamp NOT NULL DEFAULT '0000-00-00 00:00:00' COMMENT '插入时间',
PRIMARY KEY (`id`),
KEY `client_type_token` (`client_type`,`token`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COMMENT='oauth token 表';
CREATE TABLE `oauth_bind` (
`id` int(11) unsigned NOT NULL AUTO_INCREMENT,
`uid` int(11) NOT NULL DEFAULT '0' COMMENT '用户uid',
`client_type` varchar(20) NOT NULL DEFAULT '' COMMENT '客户端',
`openid` varchar(80) NOT NULL DEFAULT '' COMMENT '第三方id',
`extra` text NOT NULL COMMENT '额外字段',
`created_time` timestamp NOT NULL DEFAULT '0000-00-00 00:00:00' COMMENT '插入时间',
PRIMARY KEY (`id`),
KEY `idx_client_type_opend_id` (`client_type`,`openid`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COMMENT='第三方登录绑定关系';###Invalid default value for 'create_date' timestamp field
SHOW VARIABLES LIKE 'sql_mode';
created_time timestamp NOT NULL DEFAULT '0000-00-00 00:00:00' COMMENT '插入时间'
其实从5.6.17这个版本就默认设置了不允许插入 0 日期了，术语是 NO_ZERO_IN_DATE NO_ZERO_DATE
sql-mode = "STRICT_TRANS_TABLES,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION"
###larvel env
https://github.com/vlucas/phpdotenv
使用 parse_ini_file 来读取.
###命名空间的 use 关键词 和 new ClassName
function myLoader($classname){
$class_file = $classname . '.php';
if ( file_exists($class_file) ){
require_once($class_file);
}else{
echo "[ autoload error ]".$class_file." not found";
die(0);
}
}
spl_autoload_register("myLoader");
require_once("apanly/BrowserDetector/Browser.php");
use apanly\BrowserDetector\Browser;
new Browser();
use 只是标明该使用那个命名空间，new 对象才是真真执行自动加载的触发器。命名空间和自动加载没有半毛钱关系###【Composer】实战操作二：自己创建composer包并提交 https://github.com/apanly/browser-detector ###网页转换为 PDF
// demo
const phantom = require('phantom');
(async function() {
const instance = await phantom.create();
const page = await instance.createPage();
await page.property('viewportSize', {width: 1024, height: 600});
const status = await page.open('https://stackoverflow.com/');
console.log(`Page opened with status [${status}].`);
await page.render('stackoverflow.pdf');
console.log(`File created at [./stackoverflow.pdf]`);
await instance.exit();
}());
// demo
domtoimage.toJpeg(document.getElementById('my-node'))
.then(function (dataUrl) {
var link = document.createElement('a');
link.download = 'my-image-name.jpeg';
link.href = dataUrl;
link.click();
});