PHP IP proxy: PHP code configured to use proxy IP tutorials

First, hand to teach you in PHP sets of agents

Anyone who is a web developer knows that sometimes a program needs to bechange of armorTo be able to work normally. Let's take crawler as an example, if we always use local IP to glean data, we will be blackmailed by the target website in minutes. This time to find a reliable proxy IP service provider (such as our ipipgo), things will be much simpler.

Here's a demo for you guysstream_context_createfunction to set up a proxy, this method is especially useful when crawling web content:

$proxy = '123.123.123.123:8888'; // fill in the proxy address provided by ipipgo here
$context = stream_context_create([
    'http' => [
        'proxy' => 'tcp://' . $proxy, 'request_fulluri' => 'tcp://' .
        
        'header' => "Proxy-Authorization: Basic " . base64_encode("Account:Password")
    ]
]);

$content = file_get_contents('http://目标网站.com', false, $context);

watch carefullyProxy-AuthorizationOn this line, if the proxy service provider requires account password verification (like ipipgo's enterprise package has this feature), remember to encode the account password in base64.

Second, the CURL method is more flexible

CURL libraries provide more precise control and are suitable for applications that requirefine operationScenarios. For example, setting timeouts, customizing request headers, and other tawdry operations:

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "http://目标网站.com");
curl_setopt($ch, CURLOPT_PROXY, 'socks5://user:pass@proxyIP:port');
curl_setopt($ch, CURLOPT_TIMEOUT, 15); // 15 second timeout
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

$response = curl_exec($ch);
if(curl_errno($ch)){
    echo 'Error: '.curl_error($ch); }
}
curl_close($ch); }

Focus here.CURLOPT_PROXYParameter, socks5:// starts with the protocol means using socks5 proxy. ipipgo's proxy service supports HTTP/HTTPS/Socks5 three protocols, according to the business needs of the random choice.

III. Guide to stepping on potholes in actual combat

Newbies often encounter a fewscene of an overturned vehicle::

It is recommended to take the free test IP first to practice (many service providers, including ipipgo will provide), to confirm that the code logic is not a problem and then on the official environment.

IV. QA First Aid Kit

Q: The program doesn't respond after the proxy is set?
A: First, use the telnet command to measure the proxy port pass or fail, such astelnet 123.123.123.123 8888If you can't connect, get the service provider to change the IP.

Q: How do I know if the proxy is active?
A: Visitshttps://api.ipipgo.com/checkipThis type of IP detection interface to see if the returned IP is a proxy.

Q: What if I need to switch IP frequently?
A: With dynamic residential proxy, ipipgo's standard version of $7.67/GB that package supports automatic IP change.

Fifth, the choice of agent services to see the doorway

Agent services on the market are a mixed bag, to teach you a fewTips for avoiding pitfalls::

• Look at the protocol support: at least support HTTP/HTTPS dual protocols
• Measure the success rate: the success rate of quality agents must be above 95%.
• Speed of response: static residential IP latency is generally within 200ms

Support like ipipgo200+ countriesThe service provider of the resource is more stable, especially their TK line is especially powerful when doing cross-border e-commerce business. Enterprise-level users can also look for their customized solutions, which is much more reliable than using a public agent pool.

Lastly, I would like to remind you that you should not buy a proxy just based on the price. Some low-priced packages use data center IPs, which are easily recognized by websites. If you are doing long-term business, it is still recommended to use residential IPs.