php 几种编码 解码

1.json_encode和json_decode

<?php $json = '{"a":1,"b":2,"c":3,"d":4,"e":5}'; var_dump(json_decode($json)); var_dump(json_decode($json, true)); ?>

object(stdClass)#1 (5) { ["a"] => int(1) ["b"] => int(2) ["c"] => int(3) ["d"] => int(4) ["e"] => int(5) } array(5) { ["a"] => int(1) ["b"] => int(2) ["c"] => int(3) ["d"] => int(4) ["e"] => int(5) }

2.base64_decode和base64_encode

　<?php 　　$str = 'VGhpcyBpcyBhbiBlbmNvZGVkIHN0cmluZw=='; 　　echo base64_decode($str); 　　?> 　　此示例将显示： 　　This is an encoded string[1]