在php中使用raw格式發送post請求，但一直無法正確取得rest api的結果，程式碼如下，請參考，謝謝

<?php
    $url="rest api url";
    $postData = $inputJson_encode;
    $result=PostFunction($url,$postData);
    echo $result."<br>";

    function PostFunction($url,$postData){
        $ch = curl_init();
        curl_setopt( $ch, CURLOPT_URL, $url);
        curl_setopt( $ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt( $ch, CURLOPT_SSL_VERIFYPEER, false);
        curl_setopt( $ch, CURLOPT_POST, 1);
        curl_setopt( $ch, CURLOPT_POSTFIELDS, $postData);
        curl_setopt($ch, CURLOPT_HTTPHEADER, array(
            'X-AjaxPro-Method:ShowList',
            'Content-Type: application/json; charset=utf-8',
            'Content-Length: ' . strlen($postData))
        );
        curl_setopt($ch, CURLOPT_TIMEOUT_MS, 30000);
        $result = curl_exec($ch);
        $errorNo = curl_errno($ch);
        return $result;
    }
?>