php截取字符窜

Question

a:2:{s:3:"aid";s:5:"49539";s:3:"url";s:58:"data/attachment/forum/201208/10/161044cc9plc60lc2zpkll.jpg";}用php获取上面的图片路径data/attachment/forum/201208/10/161044cc9plc60lc2zpkll.jpg

Answer 1

$s='a:2:{s:3:"aid";s:5:"49539";s:3:"url";s:58:"data/attachment/forum/201208/10/161044cc9plc60lc2zpkll.jpg";}';
$arr=unserialize($s);
echo $arr['url']; 

Answer 2

<?php
$s = 'a:2:{s:3:"aid";s:5:"49539";s:3:"url";s:58:"data/attachment/forum/201208/10/161044cc9plc60lc2zpkll.jpg";}';
$data = unserialize($s);
echo $data['url'];
?>

Answer 3

这是json字符串
先进性格式化成json，然后就直接访问调用