PHP中数组转换成json字符串程序代码-php手册-php.cn

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PHP中数组转换成json字符串程序代码

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Jun 13, 2016 am 11:19 AM

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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

复制代码

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	复制代码
if($_GET['enews']=='ok'){ echo json_encode(array('a'=>'王进'));exit; } ?>

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：

代码如下	复制代码
$data = '"'; echo json_encode($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（ 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：

代码如下	复制代码
$data = array(); echo json_encode($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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