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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