PHP cURL初始化和执行方法入门级代码

$ch = curl_init();
# 设定url和把成果返回，是不是返回头部
curl_setopt($ch, CURLOPT_URL, "https://www.baidu.com/");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($this->ch, CURLOPT_HEADER, 1);

# cookie文件设定
curl_setopt($this->ch, CURLOPT_COOKIEJAR, $cookie_file);
curl_setopt($this->ch, CURLOPT_COOKIEFILE, $cookie_file);

# 额外头部
curl_setopt($this->ch, CURLOPT_HTTPHEADER, array("User-Agent: Mozilla/5.0"));

# 设定post
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $poststring);

# 衔接、履行过期时光
curl_setopt($this->ch, CURLOPT_CONNECTTIMEOUT, 5);
curl_setopt($this->ch, CURLOPT_TIMEOUT, 30);

# 是不是追随301 302
curl_setopt($this->ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($this->ch, CURLOPT_MAXREDIRS, 10);

# refer
curl_setopt($this->ch, CURLOPT_REFERER, $refer);

# http版本和端口重用设置
curl_setopt($this->ch, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1);
curl_setopt($this->ch, CURLOPT_FORBID_REUSE, 1);

# 支撑https
curl_setopt($this->ch, CURLOPT_SSL_VERIFYPEER, 0);
curl_setopt($this->ch, CURLOPT_SSL_VERIFYHOST, 0);

# 如果须要进行毫秒超时，须要增长：
curl_setopt($this->ch, CURLOPT_NOSIGNAL, 1);

# 履行
$response = curl_exec($ch);
if(curl_errno($ch)){
  curl_error($ch);
  exit();
}
curl_close($ch);

$ch = c