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                # PHP總結大全 [TOC] ## 1. 接收表單數據 * $_request : php中$_REQUEST可以獲取以POST方法和GET方法提交的數據,但是速度比較慢 * $_get :①安全性不好,在URL中可以看得到 ② 傳送數據量較小,不能大于2KB。 * $_post : POST方法他是通過HTTP POST機制,將表單的各個字段放置在HTTP HEADER內一起傳送到action屬性所指的URL地址中,用戶看不到這個過程。他提交的大小一般來說不受限制,但是具體根據服務器的不同,還是略有不同。相對于_GET方式安全性略高 ## 2.php 刪除字符串中指定字符 ~~~ <?php $str = "我_們_的_=家+園"; $str = str_replace(array("_","=","+"),"",$str); echo $str; ?> ~~~ ## 3.寫入文件打印日志 ~~~ function logResult($word='') { date_default_timezone_set("PRC"); $fp = fopen("log.txt","a"); flock($fp, LOCK_EX) ; fwrite($fp,"執行日期:".strftime("%Y%m%d%H%M%S",time())."\n".$word."\n"); flock($fp, LOCK_UN); fclose($fp); } ~~~
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