How to determine whether json format is correct in PHP

How does PHP determine whether the json format is correct? This article mainly shares with you the implementation code for PHP to determine whether the json format is correct. The code is simple and easy to understand. I hope it can help everyone.

Without further ado, I will post the code directly for you. The specific code is as follows:

##

<?php
$GLOBALS[&#39;count&#39;] = 0;
//校验data或者content的json格式是否有错误
function data($value) {
  if (isset($value[&#39;data&#39;])) {
    $value[&#39;data&#39;] = json_decode($value[&#39;data&#39;], true);
  } else if (isset($value[&#39;content&#39;])) {
    $value[&#39;content&#39;] = json_decode($value[&#39;content&#39;], true);
  } else {
    die(&#39;必须要有content或者data字段&#39;);
  }
  $error = json_last_error();
  if (!empty($error)) {
    echo "<pre class="brush:php;toolbar:false">";
    print_r($value);
    echo "

"; } return $value; } //校验静态资源是否存在； function my_filter($value) { $needle = ['.jpg', '.jpeg', '.png', '.avi', '.mp4', '.wav', '.gif', '.mp3']; $root = 'D:/phpStudy/WWW/levelData/'; foreach ($needle as $k => $v) { $aa = strpos($value, $v); if ($aa) { $file = $root . $value; if (!file_exists($file)) { $GLOBALS['count']++; return $value; } } } } //获取多维数组里面某一列的下标，并重新组成一维数组 function searchMultiArray(array $array, $search, $mode = 'key') { $res = array(); foreach (new RecursiveIteratorIterator(new RecursiveArrayIterator($array)) as $key => $value) { if ($search === ${${"mode"}}) { if ($mode == 'key') { $res[] = $value; } else { $res[] = $key; } } } return $res; } function my_filter_answer($value) { $needle = ['，', '、', ' ', '.', ',,', '，，']; foreach ($needle as $k => $v) { $aa = strpos($value, $v); if ($aa) { return 1; } } } //将汉字，特殊字符原样变成json数据 function ch_json_encode($data) { $ret = ch_urlencode($data); $ret = json_encode($ret); return '\'' . addslashes(urldecode($ret)) . '\''; } //汉字，特殊字符变可读懂的字符串主程序 function ch_urlencode($data) { if (is_array($data) || is_object($data)) { foreach ($data as $k => $v) { if (is_scalar($v)) { if (is_array($data)) { $data[$k] = urlencode($v); } else if (is_object($data)) { $data->$k = urlencode($v); } } else if (is_array($data)) { $data[$k] = ch_urlencode($v); // 递归调用该函数 } else if (is_object($data)) { $data->$k = ch_urlencode($v); } } } return $data; }

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