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:
- 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 ) . """;
- }//开源软件:Vevb.com
- // 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.//开源软件:Vevb.com
- 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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