话不多说,如下所示:
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<?php //生成随机数 和 时间函数 //echo rand(); //echo "<br>"; //echo rand(0,10); //echo time();//时间戳 //2017-02-10 08:46:12 date_default_timezone_set( "Asia/Shanghai" ); //echo date("Y-m-d h:i:s");//默认转换当前时间 //echo date("Y-m-d h:i:s",'1386688343'); //echo strtotime("2013-12-10 11:12:23"); //字符串的处理 $str = 'Hello World!!!' ; //echo strlen($str); //$str1='Abc'; //$str2='abc'; //echo strcmp($str1,$str2); //echo strcasecmp($str1,$str2); echo strtoupper ( $str2 ); echo strtolower ( $str1 ); //$str = "a|B|c|d"; //$str1 = explode("|",$str); //echo implode("&",$str1); //echo substr($str,1,3); //echo str_replace("|","&",$str); //echo substr_replace($str,"%",1,1); $str = "hello3 world4 ashdf223sdfa2323sd45454" ; //preg_match("/\d/",$str,$str2); //preg_match_all("/\d/",$str,$str3); //var_dump($str3); //$str4 = preg_replace("/\d/", "数字", $str); //var_dump($str4); $str5 = preg_split( "/\d/" , $str ); var_dump( $str5 ); |
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原文链接:http://www.cnblogs.com/jc535201285/p/6385359.html