PHP中数组转换成json字符串程序代码
数据转换js格式的数据是我们常用一种数据传递的方法,特别像ajax中会时常用到把数据转换成json然后再转换回来,下面看一个实例,代码如下:
<?php function array_to_json($array) { if (!is_array($array)) { return false; } $associative = count(array_diff(array_keys($array) , array_keys(array_keys($array)))); if ($associative) { $construct = array(); foreach ($array as $key => $value) { // We first copy each key/value pair into a staging array, // formatting each key and value properly as we go. // Format the key: if (is_numeric($key)) { $key = "key_$key"; } $key = """ . addslashes ( $key ) . """; // Format the value: if (is_array($value)) { $value = array_to_json($value); } else if (!is_numeric($value) || is_string($value)) { $value = """ . addslashes ( $value ) . """; } // Add to staging array: $construct[] = "$key: $value"; } // Then we collapse the staging array into the JSON form: $result = "{" . implode(",", $construct) . "}"; } else { // If the array is a vector (not associative): $construct = array(); foreach ($array as $value) { // Format the value: if (is_array($value)) { $value = array_to_json($value); } else if (!is_numeric($value) || is_string($value)) { $value = """ . addslashes ( $value ) . """; } // Add to staging array: $construct[] = $value; } // Then we collapse the staging array into the JSON form: $result = "[" . implode(", ", $construct) . "]"; } return $result; }
你可以试试这个,然后json_encode换成上面的函数看看正常了吗,代码如下:
<?php if($_GET['enews']=='ok'){ echo json_encode(array('a'=>'王进'));exit; } <script type="text/javascript" src="jquery.js"></script> <script type="text/javascript"> $(function(){ $.get("?enews=ok", function(result){ alert(result); }); }); </script>
关于php中json_encode
json_encode()将PHP的不同类型的变量转换为对应的JSON字符串 string json_encode(mixed $value [,int $options = 0])
PHP 5.3.0
JSON_HEX_QUOT:将所有的双引号(”)转换为u0022,实例代码如下:
$data = '"'; echo json_encode($data); // """ echo json_encode($data, JSON_HEX_QUOT); // "u0022"
JSON_HEX_TAG:将所有的大于号(>)转换为u003E,将所有的小于号(<)转换为 u003C。
JSON_HEX_AMP:将所有的与号(&)转换为 u0026。
JSON_HEX_APOS:将所有的单引号(’)转换为u0027。
JSON_FORCE_OBJECT:当value为非关联数组时强制输出结果为JSON对象。在接收者要求数据为对象且value为空数组时
使用,实例代码如下:
$data = array(); echo json_encode($data); // [] echo json_encode($data, JSON_FORCE_OBJECT); // {} PHP 5.3.3 JSON_NUMERIC_CHECK: Encodes numeric strings as numbers. PHP 5.4.0 JSON_BIGINT_AS_STRING: Encodes large integers as their original string value. Available since PHP 5.4.0. JSON_PRETTY_PRINT: Use whitespace in returned data to format it. Available since PHP 5.4.0. JSON_UNESCAPED_SLASHES: Don't escape /. Available since PHP 5.4.0. JSON_UNESCAPED_UNICODE: Encode multibyte Unicode characters literally (default is to escape as uXXXX). Available since PHP 5.4.0.
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