PHP uses curl to implement simulated form submission function

This article mainly introduces in detail how PHP uses curl to implement a simple simulated form submission function. It has a certain reference value. Interested friends can refer to it

The specific content is as follows

//初始化curl
$ch = curl_init();
$url = 'xxx';
$option = [
 CURLOPT_URL => $url,
 CURLOPT_HEADER => 1,
 CURLOPT_RETURNTRANSFER => 1,
];
curl_setopt_array($ch, $option);
$output = curl_exec($ch);
preg_match_all('/Set-Cookie: (.*);/i', $output, $str); //正则匹配
//如果有token的话就获取token
preg_match('/token = \"(.*)\"/i', $output, $token);
if (empty($str)) {
 return false;
}
$cook = $str[1];
$cookie = implode(';', $cook);

$up_url = 'xxx';
$post_data = [
 'name' => 'test_',
 'tel' => '18819271234',
 'email' => 'qqhahadfdfads@163.com',
 'message' => 'this is my message;',
 '_token' => $token[1],
];
$options = [
 CURLOPT_URL => $up_url,
 CURLOPT_RETURNTRANSFER => 1,
 CURLOPT_HEADER => 1,
 CURLOPT_USERAGENT => "Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.96 Safari/537.36",
 CURLOPT_COOKIESESSION => 1,
 CURLOPT_POST => 1,
 CURLOPT_POSTFIELDS => $post_data,
 CURLOPT_COOKIE => $cookie
];
curl_setopt_array($ch, $options);
$res = curl_exec($ch);
// $info = curl_getinfo($ch);
if ($res === FALSE) {
 p('curl Error: ' . curl_error($ch));
}
curl_close($ch);
p($res);

Taken from a website developed based on laravel. There is a csrf_token in the form in laravel. So you have to get the token and bring the cookie

Note here that you cannot initialize two curls at the same time, otherwise the token or cookie will change. If you need to initialize two curls, you can use the CURLOPT_COOKIEJAR setting. [See the manual for details]

Then run Next: binggo

When using curl, the most important thing is the application of cookies. After looking through the manual, there are four cookie settings. ..CURLOPT_COOKIESESSION, CURLOPT_COOKIE, CURLOPT_COOKIEFILE, CURLOPT_COOKIEJAR

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