PHP 数组序列化，转为字符串

serialize()

<?php
$a = array('a' => 'as' ,'b' => 'bs' , 'c' => 'cs');
 
//序列化数组
$s = serialize($a);
echo $s;
//输出结果：a:3:{s:1:"a";s:5:"as";s:1:"b";s:6:"bs";s:1:"c";s:7:"cs";}
?>