json_decode解析backslash时报错
<code>$array = array( 'code_pattern' => '\d{6}' ); //ok print_r(json_decode(json_encode($array),true)); //error print_r(json_decode('{"code_pattern":"\\d{6}"}',true)); </code>
这个问题怎么解决?
补充:
<code>$array = array( 'code_pattern' => '\d{6}' ); $arr_str = json_encode($array); echo $arr_str . "\n"; //ok print_r(json_decode($arr_str,true)); //error $arr_dec = json_decode('{"code_pattern":"\\d{6}"}',true); var_dump($arr_dec); </code>
结果:
<code>.{"code_pattern":"\\d{6}"} Array ( [code_pattern] => \d{6} ) NULL Time: 102 ms, Memory: 7.25Mb </code>
回复内容:
<code>$array = array( 'code_pattern' => '\d{6}' ); //ok print_r(json_decode(json_encode($array),true)); //error print_r(json_decode('{"code_pattern":"\\d{6}"}',true)); </code>
这个问题怎么解决?
补充:
<code>$array = array( 'code_pattern' => '\d{6}' ); $arr_str = json_encode($array); echo $arr_str . "\n"; //ok print_r(json_decode($arr_str,true)); //error $arr_dec = json_decode('{"code_pattern":"\\d{6}"}',true); var_dump($arr_dec); </code>
结果:
<code>.{"code_pattern":"\\d{6}"} Array ( [code_pattern] => \d{6} ) NULL Time: 102 ms, Memory: 7.25Mb </code>
你输出一下json_encode($array)
的值就知道为什么了。
测试了一下,json_encode($arry)
会输出{"code_pattern":"\\d{6}"}
,它将\
进行了转义。但是你需要使用json_decode('{"code_pattern":"\\\\d{6}"}')
才能得到想要的结果\d{6}
。
题外话:SF怎么不支持markdown删除线的语法呢?我在编辑答案的时候是可以看到效果的,展示出来就没有了。

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