curl_exec（）总是返回false

Z时代
2024-01-10
分类：问答

我已经写了这段简单的代码：

$ch = curl_init();
//Set options
curl_setopt($ch, CURLOPT_URL, "http://www.php.net");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$website_content = curl_exec ($ch);

在我的情况$website_content当属false。谁能建议/建议出什么问题了？

回答：

错误检查和处理是程序员的朋友。检查初始化和执行cURL函数的返回值。curl_error()并curl_errno()在失败的情况下包含更多信息：

try {
    $ch = curl_init();
    // Check if initialization had gone wrong*    
    if ($ch === false) {
        throw new Exception('failed to initialize');
    }
    curl_setopt($ch, CURLOPT_URL, 'http://example.com/');
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt(/* ... */);
    $content = curl_exec($ch);
    // Check the return value of curl_exec(), too
    if ($content === false) {
        throw new Exception(curl_error($ch), curl_errno($ch));
    }
    /* Process $content here */
    // Close curl handle
    curl_close($ch);
} catch(Exception $e) {
    trigger_error(sprintf(
        'Curl failed with error #%d: %s',
        $e->getCode(), $e->getMessage()),
        E_USER_ERROR);
}