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用php创建跨域访问的jsonp数据

前端开发后端开发PHPJavaScript 387 
<?php
$data = '{}'; // json string
if(array_key_exists('callback', $_GET)){
    header('Content-Type: text/javascript; charset=utf8');
    header('Access-Control-Allow-Origin: http://www.example.com/');
    header('Access-Control-Max-Age: 3628800');
    header('Access-Control-Allow-Methods: GET, POST, PUT, DELETE');

    $callback = $_GET['callback'];
    echo $callback.'('.$data.');';

}else{
    // normal JSON string
    header('Content-Type: application/json; charset=utf8');
    echo $data;
}

JSONP使用示例

<script>
    function receiver(data){
        console.log(data);
    }
</script>
<script src="data-service.php?callback=receiver"></script>

关于JSONP的字符串decode:php jsonp字符串格式化decode函数

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