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 |
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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 $result;
}
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你可以试试这个 然后json_encode换成上面的函数看看正常了吗
| 代码如下 |
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if($_GET['enews']=='ok'){
echo json_encode(array('a'=>'王进'));exit;
}
?>
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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
$options = 0])
PHP 5.3.0
JSON_HEX_QUOT: 将所有的双引号（”）转换为u0022。
// 实例代码：
| 代码如下 |
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$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 |
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$data = array();
echo json_encode($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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