php一些实用的自制方法
时间戳转多久之前
function mdate($time = NULL) { $text = ''; $time = $time === NULL || $time > time() ? time() : intval($time); $t = time() - $time; //时间差 （秒） $y = date('Y', $time)-date('Y', time());//是否跨年 switch($t){ case $t == 0: $text = '刚刚'; break; case $t < 60: $text = $t . '秒前'; // 一分钟内 break; case $t < 60 * 60: $text = floor($t / 60) . '分钟前'; //一小时内 break; case $t < 60 * 60 * 24: $text = floor($t / (60 * 60)) . '小时前'; // 一天内 break; case $t < 60 * 60 * 24 * 3: $text = floor($time/(60*60*24)) ==1 ?'昨天 ' . date('H:i', $time) : '前天 ' . date('H:i', $time) ; //昨天和前天 break; case $t < 60 * 60 * 24 * 30: $text = date('m月d日 H:i', $time); //一个月内 break; case $t < 60 * 60 * 24 * 365&&$y==0: $text = date('m月d日', $time); //一年内 break; default: $text = date('Y年m月d日', $time); //一年以前 break; } return $text; }
//json乱码转中文
function decodeUnicode($str){ return preg_replace_callback('/\\\\u([0-9a-f]{4})/i', create_function( '$matches', 'return mb_convert_encoding(pack("H*", $matches[1]), "UTF-8", "UCS-2BE");' ), $str); }
//时间戳转日期 function MyDate($time){ return date("Y-m-d H:i:s",$time); }
//获取真实ip function getClientIP(){ global $ip; if(getenv("HTTP_CLIENT_IP")){ $ip = getenv("HTTP_CLIENT_IP"); }else if(getenv("HTTP_X_FORWARDED_FOR")){ $ip = getenv("HTTP_X_FORWARDED_FOR"); }else if(getenv("REMOTE_ADDR")){ $ip = getenv("REMOTE_ADDR"); }else{ $ip = "NULL"; } return $ip; }
curl爬虫
function _grab($curl,$postInfo='',$cookie='',$referer='',$userAgent=''){ $ch = curl_init(); curl_setopt($ch, CURLOPT_URL, $curl); //不输出头 curl_setopt($ch, CURLOPT_HEADER, 0); //以字符串返回获取的信息，不直接输出 curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); //如果是https链接，不验证证书 if(preg_match('/https/i', $curl)){ curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); } //POST if($postInfo){ curl_setopt($ch,CURLOPT_POST,1); curl_setopt($ch,CURLOPT_POSTFIELDS,$postInfo); } //加入cookie if($cookie){ curl_setopt($ch,CURLOPT_COOKIE,$cookie); } //模拟来路 if($referer){ curl_setopt($ch, CURLOPT_REFERER, $referer); } //模拟环境 if($userAgent){ curl_setopt($ch, CURLOPT_USERAGENT, $userAgent); } //执行 $content = curl_exec($ch); //错误处理 if ($content === false) { return "网络请求出错: " . curl_error($ch); exit(); }
curl_close($ch); return $content; }
//输入二维数组，输出二维数组的全部可能，用于生成sku //$data = ['颜色'=>['红','黄','蓝'],'内存'=>['4G','8G']]; //得到：Array ( [0] => Array ( [颜色] => 红 [内存] => 4G ) [1] => Array ( [颜色] => 红 [内存] => 8G ) [2] => Array ( [颜色] => 黄 [内存] => 4G ) [3] => Array ( [颜色] => 黄 [内存] => 8G ) [4] => Array ( [颜色] => 蓝 [内存] => 4G ) [5] => Array ( [颜色] => 蓝 [内存] => 8G ) ) public function getSkus($data){ /* $data = ['颜色'=>['红','黄','蓝'],'内存'=>['4G','8G']];*/ //用来装key $index = []; foreach ($data as $key => $value) { //key的集合 $index[] = $key; } //data数组元素的个数 $count = count($index); //newData 用于装结果 $newData = []; //第一种可能 if($count==1){ //此时 $index[0]就是$data的第一个key $data_1 = $data[$index[0]]; //如果只有一位，for循环只有一层 for($x = 0;$x<count($data_1);$x++){ //$index[0]是索引 $newData[] = [$index[0]=>$data_1[$x]]; } } elseif($count==2){ $data_1 = $data[$index[0]]; $data_2 = $data[$index[1]]; for($x = 0; $x<count($data_1);$x++){ for($y = 0; $y <count($data_2); $y++){ //index[0] , 和 ,$index[1]分别是索引 $newData[] = [$index[0] => $data_1[$x],$index[1] => $data_2[$y]]; } } } elseif($count==3){ $data_1 = $data[$index[0]]; $data_2 = $data[$index[1]]; $data_3 = $data[$index[2]]; for($x = 0; $x<count($data_1);$x++){ for($y = 0; $y <count($data_2); $y++){ for($z = 0; $z <count($data_3) ; $z++){ //index[0] , 和 ,$index[1] ,$index[2] 分别是索引 $newData[] = [$index[0] => $data_1[$x],$index[1] => $data_2[$y],$index[2] => $data_3[$z]]; } } } } elseif($count==4){ $data_1 = $data[$index[0]]; $data_2 = $data[$index[1]]; $data_3 = $data[$index[2]]; $data_4 = $data[$index[3]]; for($x = 0; $x<count($data_1);$x++){ for($y = 0; $y <count($data_2); $y++){ for($z = 0; $z <count($data_3) ; $z++){ for($a = 0; $a <count($data_4) ; $a++){ //index[0] , 和 ,$index[1] ,$index[2] 分别是索引 $newData[] = [$index[0] => $data_1[$x],$index[1] => $data_2[$y],$index[2] => $data_3[$z],$index[3] => $data_4[$a]]; } } } } } else{ return false; } return $newData; }
//写入日志date('m_d') function my_log($data){ $log_file = date('m_txt__d__',time()).'.txt'; /* $content =var_export($data,TRUE);*/ $data .= "\r\n"; file_put_contents($log_file,$data, FILE_APPEND); }
//从txt一行一行读取成数组 function readKeyword(){ $data = []; $f= fopen("danci.txt","r"); $count = 0; while (!feof($f)) { $line = fgets($f); $line = substr($line, 0,6); $data[] = $line; } fclose($f); return $data; }
编码 header("Content-Type:text/html;charset=utf-8"); //时区 date_default_timezone_set("PRC"); ignore_user_abort(); //关掉浏览器，PHP脚本也可以继续执行. set_time_limit(0); // 通过set_time_limit(0)可以让程序无限制的执行下去 ob_flush(); //输出缓冲 flush();
//网络图片转换本地图片 function jpgChangeLocal($pic){ //获取文件 $file = _request($pic); $end = rand(1000,9999).'_'.time().'.jpg'; $dir_path = 'd:/image'; if(!is_dir($dir_path)){ mkdir($dir_path); } $filename = $dir_path.'/'.$end; //打开写入流 $resource = fopen($filename, 'a'); //写入 fwrite($resource, $file); //关闭资源 fclose($resource); return '@'.dirname(__FILE__).'/'.$filename; }
