PHP handles JSON string key missing double quote resolution _php Tips

Source: Internet
Author: User
Tags php programming

This article describes the PHP processing JSON string key is missing the quotation mark solution, share for everyone to use for reference. The specific methods are as follows:

In general, the JSON string is a key:value-form string, and the normal key is enclosed in double quotes.

For example:

<?php
$data = Array (' name ' => ' Fdipzone ');
echo Json_encode ($data);            {' name ': ' Fdipzone '}
print_r (Json_decode (Json_encode ($data), true);//array ([name] => fdipzone)
?>

However, if the key of the JSON string is missing double quotes, then Json_decode will fail.

<?php
$str = ' {' name ': ' Fdipzone '} ';
Var_dump (Json_decode ($str, true)); Array (1) {[' Name ']=> string (8) ' Fdipzone '}

$str 1 = ' {name: ' Fdipzone '} ';
Var_dump (Json_decode ($str 1, true)); NULL
?>

Solution: To determine whether there is a lack of dual-cited key, such as the absence of the first replacement with the "key", and then Json_decode operation.

<?php
/** compatible key has no dual-quoted JSON string parsing
* @param string $str JSON string
* @param boolean $mod true:array,false:o Bject
* @return array/object
/
function Ext_json_decode ($str, $mode =false) {
  if Preg_match ('/\w:/' , $str)) {
    $str = preg_replace ('/(\w+):/is ', ' "$: ', $str);
  }
  Return Json_decode ($str, $mode);
}

$str = ' {' name ': ' Fdipzone '} ';
Var_dump (Ext_json_decode ($str, true)); Array (1) {[' Name ']=> string (8) ' Fdipzone '}

$str 1 = ' {name: ' Fdipzone '} ';
Var_dump (Ext_json_decode ($str 1, true)); Array (1) {[' Name ']=> string (8) ' Fdipzone '}
?>

I hope this article will help you with the learning of PHP programming.

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