如何从 cURL 数组中获取数值？

Question

我正在尝试从 cURL 响应数组中获取数值。但无法做到这一点。我正在使用此代码

     $urltopost = "http://www.xxxx.yyy.com/zzz.php";
     $ch = curl_init ($urltopost);
     curl_setopt ($ch, CURLOPT_POST, true);
     curl_setopt ($ch, CURLOPT_POSTFIELDS, $data);
     curl_setopt ($ch, CURLOPT_RETURNTRANSFER, true);
     $returndata = curl_exec ($ch);
     print_r($returndata);

它会在页面上打印此我们的新发票 ID 为：[{-10191}]。现在我想从数组中获取 10191。我试过这个但失败了。

     $id = abs(filter_var(implode($returndata), FILTER_SANITIZE_NUMBER_INT));

如何获取数值？

Answer 1

如果你得到$returndata 就像 字符串

---

把这个放在 curl_exec 之后：

<?php

$urltopost = "http://www.xxxx.yyy.com/zzz.php";
$ch = curl_init ($urltopost);
curl_setopt ($ch, CURLOPT_POST, true);
curl_setopt ($ch, CURLOPT_POSTFIELDS, $data);
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, true);
$returndata = curl_exec ($ch);
//$returndata = 'Our new Invoice (ID) is: [{-10191}]';
preg_match_all("/\{([^\]]*)\}/", $returndata, $matches);
$invoiceID = intval(ltrim($matches[1][0], '-'));
print_r($invoiceID);