PHP cURL POST request: PHP sends a POST request

Teach you to play with PHP POST request + proxy IP handily

Today let's nag PHP with cURL send POST request tart operation, especially how to use with proxy IP to use. This thing seems simple, but inside the door can be a lot, not good will fall into the pit. Don't panic, follow my rhythm step by step.

Why do I have to wear a proxy vest for POST requests?

To give a chestnut, just like online shopping with a friend's account to place an order, the proxy IP is the friend who helps you to do the work on your behalf. Some websites specialize in catching the frequent operation of the IP seal, this time with ipipgo's proxy IP pool rotation, absolutely can keep you safe. Especially for those who do data collection, no proxy is like running around naked.

// Basic POST request template
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "http://目标网址.com");
curl_setopt($ch, CURLOPT_POST, 1); curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, "Parameter 1=value 1 & Parameter 2=value 2");
$response = curl_exec($ch);

Proxy IP real-world three-piece suite

Here's the kicker! To put a proxy vest on cURL just add three lines of code:

// Add the ipipgo proxy configuration
curl_setopt($ch, CURLOPT_PROXY, 'Proxy IP:port');
curl_setopt($ch, CURLOPT_PROXYUSERPWD, 'Account:Password'); // if you need authentication
curl_setopt($ch, CURLOPT_PROXYTYPE, CURLPROXY_HTTP); //protocol type

Watch out for these potholes:

• The proxy IP format must beIP:Port, e.g. 114.114.114.114:8888
• Use ipipgo's proxy remember they have theTwo types of authentication: Account password authentication and IP whitelisting
• For https requests, choose a proxy package that supports SSL.

Handbook on demining of operational problems

Connoisseur's private configuration parameters

These are the parameters to tune if you want the agent to work well:

// Timeout setting (in seconds)
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 10);
curl_setopt($ch, CURLOPT_TIMEOUT, 30).

// Keep long connections (for high-frequency requests)
curl_setopt($ch, CURLOPT_FORBID_REUSE, 0); // Keep long connections (good for high frequency requests).
curl_setopt($ch, CURLOPT_FRESH_CONNECT, 0); // Keep long connections (good for high frequency requests).

QA time

Q: What should I do if I slow down after using a proxy?
A: 80% is the problem of public proxy, change ipipgo's exclusive proxy package, the speed can be enhanced more than 3 times.

Q: What if I need to process a CAPTCHA?
A: ipipgo's Dynamic Residential Proxy comes with browser fingerprint camouflage, which can significantly reduce the CAPTCHA trigger rate.

Q: How to solve the problem that the proxy IP is always blocked?
A: You have to use high quality proxies. ipipgo's business-grade proxies have millions of IP pools and automatically filter failed nodes.

Why ipipgo?

My own experience after using it for over two years says that these three points are the most true:

1. Unique in ChinaTriple BGP Converged LineDelay less than 50ms
2. API fetch IP second response withSuccess rate monitoringfunctionality
3. Technical support is online 24 hours a day, and the last time I had a problem in the middle of the night, it was solved in 10 minutes.

One last nagging note, when testing proxiesNever use Baidu as a test site, their anti-crawl mechanism is too sick. It is recommended to use your own test page or use a professional testing site like httpbin.org.