<?php $a = "A,B,C" $a = "hello"; //echo strlen($a);//去字符串的长度 var_dump(strcmp("hello","Hello"));//判断俩个字符串是否相同，相同返回0，不返回1,区分大小写 //echo strcasecmp("hello","Hello");//判断俩个字符串是否相同，相同返回0，不返回1,不区分大小写 //echo strtolower($a);//转小写 //echo strtoupper($a);//转大写 $attr = explode("|",$a);//拆分字符串，返回一个数组 $a.split(",");//js使用 var_dump($sttr); $a = "n001|n002|n003|n004"; implode(">"，$attr);//将数组元素拼接字符串 //echo substr_replace($a,"mm",0,4);//替换字符串，替换指定位置 //echo str_replace("n","p",$a);//查找替换,全部替换 /*$str = array( array("n001","汉族"), array("n002","回族"), array("n003","苗族"), )
"n001^汉族|n002^回族|n003^苗族|" echo substr($a,0,strlen($a)-1); echo substr($a,0,4);//截取字符串 */ $a = "n001|n002|n003|n004"; var_dump(str_split($a,2));//根据长度拆分字符串 echo strstr($a,"|",true);//返回某个字符串出现的位置到末尾的全部字符 echo trim($a);//去空格
$a.trim();//js没有，但是Jqiery有 ucfirst
?>