###对数字每隔4位空格分隔
$str='111234562727727';
preg_replace('/(\d)(?=(?:\d{4})+$)/','$1 ',$str)#"111 2345 6272 7727"
preg_replace_callback('#[\d]{4}#',function($i){return $i[0].' ';},$str);
//js
var str = '111234562727727';
str.replace(/[\s\S]{4}/g,function(match){
return match + " ";
});
str.replace(/(\d)(?=(?:\d{4})+$)/g, '$1 ')###根据平均数排序
Array.prototype.sum=function(){
var num=0;
for(var i=0;i<this.length;i++){
num+=this[i];
}
return num;
}
function vhall_sort(arr){
arr.sort(function(a,b){
return a.sum()/a.length-b.sum()/b.length;
})
}
arr = [[1,2],[5,1],[3,2]];
vhall_sort(arr);
console.log(arr);//[[1,2],[3,2],[5,1]]###生成零点到23点时间
function createHisRange($hisStart = '00:00:00', $hisEnd = '23:59:59', $range = 3600, $format = 'H:00:00')
{
$t1 = strtotime($hisStart);
$t2 = strtotime($hisEnd);
$arrHis = array();
while($t1 < $t2){
$arrHis[] = date($format,$t1);
$t1 += $range;
}
return $arrHis;
}
>>> createhisrange()
=> [
"00:00:00",
"01:00:00",
"02:00:00",
"03:00:00",
"04:00:00",
"05:00:00",
"06:00:00",
"07:00:00",
"08:00:00",
"09:00:00",
"10:00:00",
"11:00:00",
"12:00:00",
"13:00:00",
"14:00:00",
"15:00:00",
"16:00:00",
"17:00:00",
"18:00:00",
"19:00:00",
"20:00:00",
"21:00:00",
"22:00:00",
"23:00:00"
]###联表和子查询
mysql> select id,(select sign from user_profile where user_id=users.id) s from users where id=13;
+----+------------------+
| id | s |
+----+------------------+
| 13 | 面朝大海春暖花开 |
+----+------------------+
1 row in set (0.02 sec)
mysql> select a.id,b.sign from users a ,user_profile b where a.id=b.user_id and a.id=13;
+----+------------------+
| id | sign |
+----+------------------+
| 13 | 面朝大海春暖花开 |
+----+------------------+
1 row in set (0.02 sec)###redis分页
$arr = $redis->zRevRange('msg:list',$pos,$pos+$limit-1);
$count = $redis->zSize('msg:list');###翻转字符
echo str_shuffle('str');
echo join('',array_reverse(preg_split('//u', 'redis数据库')));//库据数sider###禁止国内访问
$ip = $_SERVER['REMOTE_ADDR'];
$content = file_get_contents('http://ip.taobao.com/service/getIpInfo.php?ip='.$ip);
$banned = json_decode(trim($content), true);
$lan = strtolower($_SERVER['HTTP_ACCEPT_LANGUAGE']);
if((!empty($banned['data']['country_id']) && $banned['data']['country_id'] == 'CN') || strstr($lan, 'zh'))
{
header('HTTP/1.0 404 Not Found');
echo 'HTTP/1.0 404 Not Found';
exit;
}###判断数组是否包含另外一个数组元素
$arr1 = array(1,2,3);
$arr2 = array(1,2,4,5,3);
$arr3 =array_intersect($arr1, $arr2);
print_r($arr3);[1,2,3]
if ($arr1 == $arr3) {
echo 'exists';
} else {
echo 'not found';
}
$arr5 =array_diff($arr1, $arr3);
if (empty($arr5)) {
echo 'exists';
} else {
echo 'not found';
}
$xhs =array(array('111',' 李宁'),array('222','喜得龙'),array('333','安踏'));
$new_xhs=array(array('111',' 李宁'),array('22',' 李3宁'),array('555','富贵鸟'),array('333','安踏'));
function myCmp($a,$b){
$_a = implode(',',(array)$a);
$_b = implode(',',(array)$b);
return strcmp($_a,$_b);
}
print_r(array_uintersect($xhs, $new_xhs,'myCmp'));
Array
(
[0] => Array
(
[0] => 111
[1] => 李宁
)
[2] => Array
(
[0] => 333
[1] => 安踏
)
)
###按照权重随机
$w = array('a' =>1, 'b'=>10, 'c'=>14, 'e'=>20, 'f'=>30, 'h'=>6, 'g'=>70);
function roll($weight)
{
$sum = array_sum($weight);
$j = 0;
foreach($weight as $k=>$v)
{
$j = mt_rand(1,$sum);
if($j <= $v)
{
return $k;
}else{
$sum -= $v;
}
}
}
$ret = array();
$n = 1000;
for($i=0;$i<$n;$i++)
{
$v = roll($w);
$ret[$v] = isset($ret[$v]) ? $ret[$v] + 1 :1;
}
print_r($ret);
Array
(
[g] => 457
[f] => 191
[e] => 135
[c] => 101
[h] => 39
[b] => 68
[a] => 9
)
foreach($ret as $k=>$v)
{
printf("real: %f\t", ($v / $n));
printf("set: %f\n",($w[$k] / array_sum($w)));
}###二维数组分页
$arr_click = array(
array( 'clicks' => 3, 'clickDate' =>'2010-10-11' ),
array( 'clicks' => 2, 'clickDate' =>'2010-10-11' ),
array( 'clicks' => 3, 'clickDate' =>'2010-10-09' ),
array( 'clicks' => 1, 'clickDate' =>'2010-10-08' ),
);
$size=2;
$pages = ceil(count($arr_click) / $size);
if(is_numeric($_REQUEST['page']))
{
if($_REQUEST['page']<1){
$page = 1;
}elseif($_REQUEST['page']>$pages)
{
$page = $pages;
}else{
$page = $_REQUEST['page'];
}
}else{
$page = 1;
}
//$page=2
$newarr = array_slice($arr_click, ($page-1)*$size, $size,true);
[
[
"clicks" => 3,
"clickDate" => "2010-10-09"
],
[
"clicks" => 1,
"clickDate" => "2010-10-08"
]
]###相同period合并相加
$arr2 = array(
array('period'=>3,'num'=>5,'sum'=>5),
array('period'=>3,'num'=>10,'sum'=>5),
array('period'=>9,'num'=>15,'sum'=>15),
array('period'=>9,'num'=>15,'sum'=>10)
);
$temp = array();
$temp2 = array();
foreach($arr2 as $item) {
list($n, $p,$k) = array_values($item);
if (array_key_exists($item['period'], $temp)) {
$temp[$n] = array($temp[$n][0]+$item['num'],$temp[$n][1]+$item['sum']);
} else {
$temp[$n] = array($item['num'],$item['sum']);
}
/*$a = array_key_exists($n, $temp) ? $temp[$n][0]+$p : $p;
$b = array_key_exists($n, $temp) ? $temp[$n][1]+$k : $k;
$temp[$n] = $a;
$temp2[$n] = $b;
$temp = array($n=>array($a,$b));*/
// $temp[] = array_key_exists($n, $temp) ? $temp[$n]+$k : $k;
}
$arr = array();
foreach($temp as $p => $n){
$arr[] = array('num'=>$n[0], 'period'=>$p,'sum'=>$n[1]);
}
print_r($arr);
Array
(
[0] => Array
(
[num] => 15
[period] => 3
[sum] => 10
)
[1] => Array
(
[num] => 30
[period] => 9
[sum] => 25
)
)###判断数组是否存在对应键值
function check_array($array, $key, $value)
{
$status = false;
foreach ($array as $arr) {
if ($arr[$key] === $value) {
$status = true;
break;
} else {
continue;
}
}
return $status;
}
check_array([['id'=>1]],'id',1)#true###中文正则表达式
preg_match('/\p{Han}+/u', '中文正则表达式test',$match);
var_dump($match);//["中文正则表达式上"]###多维数组相同key的value值累加
function array_value_sum()
{
$res = array();
foreach (func_get_args() as $arr) {
foreach ($arr as $k => $v){
if (!isset($res[$k])){
$res[$k] = $v;
}else{
$res[$k] += $v;
}
}
}
return $res;
}
$arr1 = array(311=>1, 312=>2, 314=>2);
$arr2 = array(311=>2, 312=>2, 313=>5, 314=>9);
$arr3 = array(314=>10);
$newArr = array_value_sum($arr1, $arr2, $arr3);
[
311 => 3,
312 => 4,
314 => 21,
313 => 5
]###数组分割合并
$arr = Array (
'question_id' => Array ( 4, 4, 4, 4, 4),
'result_branch' => Array (126, 130, 134 ,1232 ,128134),
'text' => Array (3213,'qweq', 'wdas', 'd ','cxzc' )
);
$idNum = count($arr['question_id']);
$branchNum = count($arr['result_branch']);
$textNum = count($arr['text']);
$countMax = max([$idNum, $branchNum, $textNum]);
$result = array();
for($i=0; $i < $countMax ; $i++){
$temp = array(
'question_id' => isset($arr['question_id'][$i]) ? $arr['question_id'][$i] : '',
'result_branch' => isset($arr['result_branch'][$i]) ? $arr['result_branch'][$i] : '',
'text' => isset($arr['text'][$i]) ? $arr['text'][$i] : ''
);
$result[] = $temp;
}
print_r($result);
[
[
"question_id" => 4,
"result_branch" => 126,
"text" => 3213
],
[
"question_id" => 4,
"result_branch" => 130,
"text" => "qweq"
],
[
"question_id" => 4,
"result_branch" => 134,
"text" => "wdas"
],
[
"question_id" => 4,
"result_branch" => 1232,
"text" => "d "
],
[
"question_id" => 4,
"result_branch" => 128134,
"text" => "cxzc"
]
]###大数处理
function calc($m,$n,$x){
$errors=array(
'被除数不能为零',
'负数没有平方根'
);
switch($x){
case 'add':
$t=bcadd($m,$n);
break;
case 'sub':
$t=bcsub($m,$n);
break;
case 'mul':
$t=bcmul($m,$n);
break;
case 'div':
if($n!=0){
$t=bcdiv($m,$n);
}else{
return $errors[0];
}
break;
case 'pow':
$t=bcpow($m,$n);
break;
case 'mod':
if($n!=0){
$t=bcmod($m,$n);
}else{
return $errors[0];
}
break;
case 'sqrt':
if($m>=0){
$t=bcsqrt($m);
}else{
return $errors[1];
}
break;
}
$t=preg_replace("/\..*0+$/",'',$t);
return $t;
}
echo calc('11111111111111111111111111111111110','10','add');//11111111111111111111111111111111120###将邮箱前缀隐藏
$str = '将邮箱前缀隐藏 [email protected] [email protected] am [email protected] 最后一个邮箱 [email protected]';
$replace = "*";
echo preg_replace_callback('/([a-zA-Z0-9]*)@([a-zA-Z0-9]*\.com)/',
function($matches) use ($replace){
return str_repeat($replace,strlen($matches[1]))."@".$matches[2];
},$str);//将邮箱前缀隐藏 *******@qq.com *******@qq.com am *******@aa.com 最后一个邮箱 *****@ff.com###n个月后
echo date('Y-m-d H:i:s',strtotime('- 1 month', strtotime('2016-05-31 23:59:59')));//2016-05-01 23:59:59
function n_month($n, $now = null)
{
if ($now === null) {
$now = time();
}
return date('Y-m-d H:i:s',strtotime("$n month", strtotime(date('Y-m-01 00:00:01', $now))));
}###二维数组组合
$myarr=[
[
"a1",
"b1",
"c1"
],
[
"a2",
"b2",
"c2"
],
[
"a3",
"b3",
"c3"
]
];
$arr = array_map(function($key) use($myarr) {
return array_column($myarr, $key);
}, array_keys($myarr[0]));
print_r($arr);
[
[
"a1",
"a2",
"a3"
],
[
"b1",
"b2",
"b3"
],
[
"c1",
"c2",
"c3"
]
]###浮点数
$a = 2.01;
var_dump(sprintf('%.20F', $a * 100));//string(24) "200.99999999999997157829"
var_dump( intval( $a * 100) );//int(200)
// float => int 之前先使用round
var_dump( intval( round($a * 100) ) );//int(201)###获取拼音
use \Overtrue\Pinyin\Pinyin;
//https://github.com/overtrue/pinyin
echo Pinyin::trans('带着希望去旅行，比到达终点更美好');
// dài zhe xī wàng qù lǔ xíng bǐ dào dá zhōng diǎn gèng měi hǎo
//获取首字母
echo Pinyin::letter('带着希望去旅行，比到达终点更美好');
// D Z X W Q L X B D D Z D G M H192.168.120.18###获取地区层级
$area = array(
array('id'=>1,'name'=>'河南','parent'=>0),
array('id'=>2,'name'=>'西湖区','parent'=>7),
array('id'=>3,'name'=>'商水','parent'=>5),
array('id'=>4,'name'=>'余杭区','parent'=>7),
array('id'=>5,'name'=>'周口','parent'=>1),
array('id'=>6,'name'=>'下城区','parent'=>7),
array('id'=>7,'name'=>'杭州','parent'=>0),
array('id'=>8,'name'=>'蒋村小区','parent'=>2)
);
function _tree($data,$id=0,$lev=0){
// static属于静态变量。此函数调用几次，这个变量只初始化一次。http://secwhy.com/m/?post=242
static $arr = array();
foreach ($data as $value) {
if ($value['parent'] == $id) {
$value['lev'] = $lev;
$arr[] = $value;
_tree($data,$value['id'],$lev+1);
}
}
return $arr;
}
print_r(_tree($area,0));
Array
(
[0] => Array
(
[id] => 1
[name] => 河南
[parent] => 0
[lev] => 0
)
[1] => Array
(
[id] => 5
[name] => 周口
[parent] => 1
[lev] => 1
)
[2] => Array
(
[id] => 3
[name] => 商水
[parent] => 5
[lev] => 2
)
[3] => Array
(
[id] => 7
[name] => 杭州
[parent] => 0
[lev] => 0
)
[4] => Array
(
[id] => 2
[name] => 西湖区
[parent] => 7
[lev] => 1
)
[5] => Array
(
[id] => 8
[name] => 蒋村小区
[parent] => 2
[lev] => 2
)
[6] => Array
(
[id] => 4
[name] => 余杭区
[parent] => 7
[lev] => 1
)
[7] => Array
(
[id] => 6
[name] => 下城区
[parent] => 7
[lev] => 1
)
)###querystring转换json
var a='account.type=1&account.id=&account.dependFlag=0&account.card.companyId=1&account.name=%E4%B8%AD%E9%93%B6VISA%E5%8D%A1&account.hidden=&account.card.cardNo=&account.moneyTypeId=0&account.card.billDay=1&account.card.repayType=0&account.card.repayDay=20&account.card.alert=2&account.comment=%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D';
var root={};
a.split('&').sort().map(function(s){
var p=root;
s.match(/(.+?)(?:\.|=)/g).map(function(ss){
var t=ss.slice(0,-1);
p[t]=p[t]||((ss.slice(-1)==='=')?decodeURIComponent(s.match(/=(.*)$/)[1]):{});
p=p[t];
});
});
console.log(root);//{"account":{"card":{"alert":"2","billDay":"1","cardNo":"","companyId":"1","repayDay":"20","repayType":"0"},"comment":"===========","dependFlag":"0","hidden":"","id":"","moneyTypeId":"0","name":"中银VISA卡","type":"1"}}###倒计时
var xhr = new XMLHttpRequest();
// http://www.barretlee.com/blog/2013/04/13/cb-readyState_3_interactive/ XMLHttpRequest响应头部的Date来做倒计时
xhr.open('get', 'testServer.txt', true); //这里的testServer.txt，其实我没有创建，完全可以不需要这个文件，我们只是要时间罢了
xhr.onreadystatechange = function(){
if(xhr.readyState == 3){ //状态3响应
var header = xhr.getAllResponseHeaders(); //获得所有的头信息
console.log(header);//会弹出一堆信息
console.log(xhr.getResponseHeader('Date')); //弹出时间，那么可以利用获得的时间做倒计时程序了。
}
}
xhr.send(null);###下载文件
function downloadFile(fileName, content){
var aLink = document.createElement("a"),
evt = document.createEvent("HTMLEvents");
evt.initEvent("click");
aLink.download = fileName;
aLink.href = content;
aLink.dispatchEvent(evt);
}###数组中文排序
$array = array(
array("新浪", 'x'),
array("百度", 'b'),
array("腾讯", 't')
);
//转换编码构造
foreach ($array as $key => $item) {
$sort_array[] = iconv("UTF-8", "GB2312", $item[0]);
}
array_multisort($sort_array, SORT_STRING, $array);
print_r($array);
Array
(
[0] => Array
(
[0] => 百度
[1] => b
)
[1] => Array
(
[0] => 腾讯
[1] => t
)
[2] => Array
(
[0] => 新浪
[1] => x
)
)###php模板
echo strtr("{greeting}! My name is {author.name}.", array(
'{greeting}' => 'Hi',
'{author.name}' => 'hsfzxjy',
));//Hi! My name is hsfzxjy.
###根据time组合
```php
$a = [
['time'=>'2015-11-01','draw'=>900],
['time'=>'2015-11-02','draw'=>1900],
['time'=>'2015-11-05','draw'=>9000],
];
$b = [
['time'=>'2015-11-01','data'=>900],
['time'=>'2015-11-03','data'=>800],
['time'=>'2015-11-05','data'=>100],
];
// http://segmentfault.com/q/1010000004309677 http://www.tantengvip.com/2015/11/php-stdclass/
function setKeyByTime($arr) {
$res = array();
foreach($arr as $item) {
$res[$item['time']] = $item;
}
return $res;
}
$c = array_merge_recursive( setKeyByTime($a), setKeyByTime($b) );
[
"2015-11-01" => [
"time" => [
"2015-11-01",
"2015-11-01"
],
"draw" => 900,
"data" => 900
],
"2015-11-02" => [
"time" => "2015-11-02",
"draw" => 1900
],
"2015-11-05" => [
"time" => [
"2015-11-05",
"2015-11-05"
],
"draw" => 9000,
"data" => 100
],
"2015-11-03" => [
"time" => "2015-11-03",
"data" => 800
]
]###call_user_func
class A
{
public function __Construct($a,$b,$c)
{
echo 'Construct'.$a.$b.$c;
}
public function test($a,$b,$c)
{
echo ' test'.$a.$b.$c;
}
}
$class = new \ReflectionClass('A');
$methods = $class->getMethods();
print_r($methods);
// 获取每个 method 的注释
$class->getDocComment();
$a = new A(1,2,3);
$a->test(1,2,3);
call_user_func(['A','test'],1,2,3);###搜索联想词
https://laravist.com/article/36
class Suggest {
const PREFIX = 'word:';
const WORDS_PREFIX = 'word_scores';
const RESULT_PREFIX = 'word_result';
protected $redis = null;
public function __construct($redis)
{
$this->redis = $redis;
}
public function add($word)
{
$len = mb_strlen($word, 'UTF-8');
for ( $i = 1; $i <= $len; $i ++ ) {
$sub = mb_substr($word, 0, $i, 'UTF-8');
$this->redis->zAdd(self::PREFIX . $sub, 0, $word);
}
}
public function incScore($word, $score = 1)
{
return $this->redis->zIncrBy(self::WORDS_PREFIX, $score, $word);
}
public function search($keyword, $stop = 5)
{
$this->redis->zInter(self::RESULT_PREFIX, array(self::PREFIX . $keyword, self::WORDS_PREFIX), array(1, 1));
return $this->redis->zRevRange(self::RESULT_PREFIX, 0, $stop, true);
}
}
echo '<pre>';
// $redis = new redis();
// $redis->connect("127.0.0.1",6379);
$suggest = new Suggest($redis);
$suggest->add('javascript');
$suggest->incScore('javascript');
print_r($suggest->search('s'));
// https://segmentfault.com/a/1190000004973921#articleHeader0###redis频道订阅
function f($redis, $chan, $msg) { //频道订阅
switch($chan) {
case 'chan-1':
echo $msg;
break;
case 'chan-2':
echo $msg;
break;
case 'chan-2':
echo $msg;
break;
}
}
$redis->subscribe(array('chan-1', 'chan-2', 'chan-3'), 'f'); // subscribe to 3 chans
$redis->publish('chan-1', 'hello, world!'); // send message. ###redis分页
//limit不能用字符串 https://segmentfault.com/a/1190000004973921#articleHeader0
print_r($redis->zrangebyscore('online',1,'+infinity',['withscores' => TRUE,'limit'=>[0,2]]));
print_r($redis->zrangebyscore('online',1,'+infinity',['withscores' => TRUE,'limit'=>[0,'2']]));###批量操作pipeline
//只是把多个redis指令一起发出去，redis并没有保证这些指定的执行是原子的
$replies = $redis->pipeline(function($pipe) {
$pipe->ping();
$pipe->incrby('counter', 10); //增量操作
$pipe->incrby('counter', 30);
$pipe->exists('counter');
$pipe->get('counter');
$pipe->sMembers('skey1');
});
print_r($replies);
$ret = $redis->multi()
->set('key1111', 'val1')
->get('key1111')
->set('key2222', 'val2')
->get('key2222')
->exec();
###redis zcount
$redis->zAdd('zkey', 0, 'val0');
$redis->zAdd('zkey', 2, 'val2');
$redis->zAdd('zkey', 10, 'val10');
$redis->zCount('zkey', 0, 3);
$redis->zAdd('zkey', 2.5, 'val2');
echo $redis->zScore('zkey', 'val2'); /* 2.5 */
//zcount 统计一个索引区间的元素个数
echo $redis->zcount('zkey',3,5);//2
echo $redis->zcount('zkey','(3',5); //'(3'表示索引值在3-5之间但不含3,同理也可以使用'(5'表示上限为5但不含5
echo $redis->zRank('tkey', 'A');// 返回集合tkey中元素A的索引值
$redis->zSize('tkey'); //返回存储在key对应的有序集合中的元素的个数
###curl cookie模拟登陆访问
function request($method, $url, $fields = array())
{
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_COOKIE, '_za=9940ad75-d123-421d-bba5-4e247da577a0;q_cl=e67');
curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/44.0.2403.130 Safari/537.36');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($ch, CURLOPT_TIMEOUT, 10);
if ($method === 'POST')
{
curl_setopt($ch, CURLOPT_POST, true );
curl_setopt($ch, CURLOPT_POSTFIELDS, $fields);
}
$result = curl_exec($ch);
return $result;
}###删除当前目录文件
array_map('unlink', glob('*'));
###获取当前目录所有php文件
$files=glob('./*.php');
$files = array_map('realpath', $files);
print_r($files);###查看当前页面是否有重复id
var tmpId = [];
var result = [];
$('*[id]').each(function() {
if ($.inArray($(this).attr('id'), tmpId) == -1) {
tmpId.push($(this).attr('id'));
} else {
result.push($(this).attr('id'));
}
})
if (result.length > 0) {
console.log('重复的ID为:' + result.join(' || '));
} else {
console.log('没有重复的ID');
}###补全时间格式
print vsprintf ( "%04d-%02d-%02d" , explode ( '-' , '1988-8-1' )); // 1988-08-01
###5位数字ABCDE*4=EDCBA,这5个数字不重复
for($i=12345; $i<25000; $i++){
if( $i*4==strrev($i) && count(array_unique(str_split($i)))==strlen($i) )
echo $i;
}
for($i=10000;$i<25000;$i++){
if(count(array_unique(str_split($i)))==count(str_split($i)) && $i*4==strrev($i)){
echo $i;
}
}
$num = range(12345,24999);
foreach ($num as $val){
$sum = strrev($val);
if($val*4 == $sum){
echo $val;
break;
}
}
$nums=ceil(98765/4);
for($i = 12345;$i<$nums;$i++){
if($i*4 == strrev($i)){
echo $i.'<br />';
}
}###字符串截取
function words_limit( $str, $num, $append_str='' ){
$words = preg_split( '/[\s]+/', $str, -1, PREG_SPLIT_OFFSET_CAPTURE );
if( isset($words[$num][1]) ){
$str = substr( $str, 0, $words[$num][1] ).$append_str;
}
unset( $words, $num );
return trim( $str );
}
echo words_limit('阿里巴巴今晚纽交所IPO全程直播', 10,'...'); ###对象转数组
function object_to_array($obj)
{$arr =array();
$arr = is_object($obj) ? get_object_vars($obj) : $obj;
foreach ($arr as $key => $val)
{
$val = (is_array($val) || is_object($val)) ? object_to_array($val) : $val;
$arr[$key] = $val;
}
return $arr;
}
$obj = new stdclass;
print_r(object_to_array($obj));###根据键判断取数组差集
function compr($a, $b) {
$aVal = is_array($a) ? $a['last_name'] : $a;
$bVal = is_array($b) ? $b['last_name'] : $b;
return strcasecmp($aVal, $bVal);
}
$aEmployees = array(
array('last_name' => 'Smith',
'first_name' => 'Joe',
'phone' => '555-1000'),
array('last_name' => 'Doe',
'first_name' => 'John',
'phone' => '555-2000'),
array('last_name' => 'Flagg',
'first_name' => 'Randall',
'phone' => '666-1000')
);
$aNames = array('Doe', 'Smith', 'Johnson');
$result = array_udiff($aEmployees, $aNames, "compr");
print_r($result);
[
2 => [
"last_name" => "Flagg",
"first_name" => "Randall",
"phone" => "666-1000"
]
]###获取图片尺寸
list( $width , $height , $type , $attr ) = getimagesize ( "base.jpg" );
###当前日期前15天
implode(',', range(date("d")-15,date("d")));//5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20
###匹配@和#
$user_arr = array();
$topic_arr = array();
formatChat('uyu@phpjs#python#', $user_arr, $topic_arr);
print_r($user_arr);
print_r($topic_arr);
function formatChat($content, &$user_arr, &$topic_arr)
{
preg_match_all("/\@[\x{4000e00}-\x{9fa5}'a-z'A-Z'0-9'_'-]+/u", $content, $user_arr);//@某人
preg_match_all("/\#([^\#|.]+)\#/", $content, $topic_arr);
return true;//#话题#
}###json格式化输出
$array = ['Joel', 23, true, ['red', 'blue']];
echo json_encode($array, JSON_FORCE_OBJECT | JSON_PRETTY_PRINT);
{
"0": "Joel",
"1": 23,
"2": true,
"3": {
"0": "red",
"1": "blue"
}
}
$array = ['23452', 23452];
echo json_encode($array);
["23452",23452]
echo json_encode($array, JSON_NUMERIC_CHECK);
[23452,23452]
$array = ["Singin' in Bahrain", "Charlie Wilson's War"];
echo json_encode($array, JSON_HEX_APOS);
["Singin\u0027 in Bahrain","Charlie Wilson\u0027s War"]
$array = ['filename' => 'example.txt', 'path' => '/full/path/to/file/'];
echo json_encode($array);
{"filename":"example.txt","path":"\/full\/path\/to\/file"}
echo json_encode($array, JSON_UNESCAPED_SLASHES);
{"filename":"example.txt","path":"/full/path/to/file"}
$array = [5.0, 5.5];
echo json_encode($array);
[5,5.5]
echo json_encode($array, JSON_PRESERVE_ZERO_FRACTION);
[5.0,5.5]
$jsonString = json_encode("{'Bad JSON':\xB1\x31}");
if (json_last_error() != JSON_ERROR_NONE) {
printf("JSON Error: %s", json_last_error_msg());
}###use && and || instead of and and or
$e = false || true;// true.
$e = false or true;// false.
#It's because $e = false || true is evaluated as $e = (false || true) and
#$e = false or true is evaluated as ($e = false) or true###json unicode转换
if (!function_exists('codepoint_encode')) {
function codepoint_encode($str) {
return substr(json_encode($str), 1, -1);
}
}
if (!function_exists('codepoint_decode')) {
function codepoint_decode($str) {
return json_decode(sprintf('"%s"', $str));
}
}
http://stackoverflow.com/documentation/php/4472/unicode-support-in-php#t=201609060941458015713
echo "\nUse JSON encoding / decoding\n";
var_dump(codepoint_encode("我好"));
var_dump(codepoint_decode('\u6211\u597d'));
var_dump('\u6211\u597d');###gravatar头像
$email = "[email protected]";
$default = "https://sf-sponsor.b0.upaiyun.com/2f8a9f042fcc293226964a7c3f075193.jpg";
$size = 40;
echo $grav_url = "https://www.gravatar.com/avatar/" . md5( strtolower( trim( $email ) ) ) . "?d=" . urlencode( $default ) . "&s=" . $size;
<img src="<?php echo $grav_url; ?>" alt="" />###python验证码识别
//http://cloudsightapi.com/api http://www.itdadao.com/articles/c15a212068p0.html http://www.jianshu.com/p/9e97c9b7dab6
pip install PIL
pip install Pillow
pip install pytesseract
#coding:utf-8
#Test one page
import pytesseract
from PIL import Image
def processImage():
image = Image.open('test.png')
#背景色处理，可有可无
image = image.point(lambda x: 0 if x < 143 else 255)
newFilePath = 'raw-test.png'
image.save(newFilePath)
content = pytesseract.image_to_string(Image.open(newFilePath), lang='eng')
#中文图片的话，是lang='chi_sim'
print(content)
processImage()
https://segmentfault.com/q/1010000005686388 去掉黑点，就是一个二值化降噪的过程
from PIL import Image,ImageEnhance,ImageFilter
im = Image.open("1.jpeg")
im = im.filter(ImageFilter.MedianFilter())
enhancer = ImageEnhance.Contrast(im)
im = enhancer.enhance(2)
im = im.convert('1')
im.show()
二值化处理 pytesser 调用了 tesseract。在python中调用pytesser模块，pytesser又用tesseract识别图片中的文字
threshold = 140
table = []
for i in range(256):
if i < threshold:
table.append(0)
else:
table.append(1)
out = imgry.point(table, '1')
out.show()
https://my.oschina.net/jhao104/blog/647326
from PIL import Image
import pytesser
image = Image.open('7039.jpg')
print pytesser.image_file_to_string('7039.jpg')
print pytesser.image_to_string(image)###判断对象为空
if ( $obj == new stdClass() )
{
echo "Object is empty"; // JSON: {}
}
else
{
echo "Object has properties";
}
$oVal = new stdClass();
$oVal = (object) [];
$oVal = (object) array();
if (empty((array) $obj)) {
//do stuff
}
if ( !array_filter((array)$obj) )
if ( $obj == new stdClass() )
if(count((array)$obj)){
//doStuff
}
$one = new stdClass();
$two = (object)array();
var_dump($one == new stdClass()); // TRUE
var_dump($two == new stdClass()); // TRUE
var_dump($one == $two); // TRUE
$two->test = TRUE;
var_dump($two == new stdClass()); // FALSE
var_dump($one == $two); // FALSE
$two->test = FALSE;
var_dump($one == $two); // FALSE
$two->test = NULL;
var_dump($one == $two); // FALSE
$two->test = TRUE;
$one->test = TRUE;
var_dump($one == $two); // TRUE
unset($one->test, $two->test);
var_dump($one == $two); // TRUE