php method to convert an array into a json array: first create a PHP sample file; then define an ordinary array; finally use the "json_encode($array);" method to convert the ordinary PHP array into a json array .
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Conversion between php arrays and json arrays
The code is as follows:
$array = array( //普通数组
"name" => "Tom",
"age" => 22
);
echo "第一组：普通PHP数组转json数组——".json_encode($array); //json数组
echo "<br />";
//*注：urlencode()函数原理就是首先把中文字符转换为十六进制，然后在每个字符前面加一个标识符%。
//urldecode()函数是用于解码已编码的URL字符串，其原理就是把十六进制字符串转换为中文字符
$arr = array( //中文数组
'0' => urlencode('信息工程系'),
'1' => urlencode('机械工程系')
);
echo "第二组：PHP包含中文的数组转json数组——".urldecode(json_encode($arr));
echo "<br />";
//*注：json数组的键与值若有中文时，中文只能用双引号“”，不能使用单引号，外面使用花括弧，并用单引号括起来
echo "第三组：json数组转PHP数组——";
$json ='{"a":"哈哈","b":"我","c":"数","d":"一","e":3,"f":2,"g":1,"h":"别生气了"}';
var_dump(json_decode($json,true));The above is the detailed content of How to convert array to json array in php. For more information, please follow other related articles on the PHP Chinese website!
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