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JSON字符串key缺少引号的解决方法
JSON字符串是key:value形式的字符串,正常key是由双引号括起来的。
例如:
<?php $data = array('name'=>'fdipzone'); echo json_encode($data); // {"name":"fdipzone"} print_r(json_decode(json_encode($data), true)); //Array ( [name] => fdipzone ) ?>
但如果json字符串的key缺少双引括起来,则json_decode会失败。
<?php $str = '{"name":"fdipzone"}'; var_dump(json_decode($str, true)); // array(1) { ["name"]=> string(8) "fdipzone" } $str1 = '{name:"fdipzone"}'; var_dump(json_decode($str1, true)); // NULL ?>
解决方法:判断是否存在缺少双引括起来的key,如缺少则先用正则替换为"key",再进行json_decode操作。
<?php /** 兼容key没有双引括起来的JSON字符串解析 * @param String $str JSON字符串 * @param boolean $mod true:Array,false:Object * @return Array/Object */ function ext_json_decode($str, $mode=false){ if(preg_match('/\w:/', $str)){ $str = preg_replace('/(\w+):/is', '"$1":', $str); } return json_decode($str, $mode); } $str = '{"name":"fdipzone"}'; var_dump(ext_json_decode($str, true)); // array(1) { ["name"]=> string(8) "fdipzone" } $str1 = '{name:"fdipzone"}'; var_dump(ext_json_decode($str1, true)); // array(1) { ["name"]=> string(8) "fdipzone" } ?>
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