PHP读取文本单行为变量及实现CURL代理每5次轮询的方法

Hey there! Let's break down your PHP problems and fix them step by step. First, your proxy rotation logic has a few bugs, and we'll also cover proper single-line file reading for your use case.

Your current binsforeveryoneproxys() function is returning the entire array of proxies instead of a single one, which is why cURL can't use it. To implement "5 uses per proxy" rotation, we need to track two things: which proxy we're currently using, and how many times we've used it. We can use static variables inside the function to preserve this state between calls.

Here's the corrected function:

function getCurrentProxy() {
    $fileName = 'joestar.txt';
    // Read proxies into an array, ignoring newlines and empty lines
    $proxies = file($fileName, FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
    
    // Static variables retain their values between function calls
    static $currentProxyIndex = 0;
    static $useCount = 0;
    
    // If we've used the current proxy 5 times, switch to the next one
    if ($useCount >= 5) {
        $currentProxyIndex++;
        // Loop back to the first proxy if we reach the end of the list
        if ($currentProxyIndex >= count($proxies)) {
            $currentProxyIndex = 0;
        }
        $useCount = 0; // Reset counter for the new proxy
    }
    
    // Increment the use count for the current proxy
    $useCount++;
    
    // Return the single proxy string cURL needs
    return $proxies[$currentProxyIndex];
}

How to Use This with cURL #

Every time you make a cURL request, call getCurrentProxy() to get the active proxy. If you're making multiple requests, this function will automatically switch proxies after 5 uses:

// Initialize cURL once (efficient for multiple requests)
$ch = curl_init();

// Set base cURL options (only need to set these once)
curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.0.0 Safari/537.36');
// Note: Your original code used `getcwd().'/cookie.txt'` as a user agent — this is invalid! Use a real user agent string.
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
    'accept: application/json',
    'content-type: application/x-www-form-urlencoded',
    'origin: https://your-origin-domain.com', // Fill in your actual origin
    'referer: https://your-referer-page.com' // Fill in your actual referer
));

// Example: Make 15 requests (cycles through 3 proxies, 5 times each)
for ($i = 1; $i <= 15; $i++) {
    // Get the current proxy and set it for this request
    $currentProxy = getCurrentProxy();
    curl_setopt($ch, CURLOPT_PROXY, $currentProxy);
    
    // Set request-specific options
    curl_setopt($ch, CURLOPT_URL, 'https://your-target-api.com'); // Fill in your target URL
    curl_setopt($ch, CURLOPT_POSTFIELDS, 'your-post-data-here'); // Fill in your POST parameters
    
    // Execute and handle the result
    $result = curl_exec($ch);
    echo "Request $i using proxy: $currentProxy\n";
    var_dump($result);
}

// Clean up cURL resource
curl_close($ch);

Key Fixes & Notes: #

• Static Variables: $currentProxyIndex and $useCount remember their values between function calls, so we don't lose track of our rotation state.
• Valid User Agent: Replace the invalid user agent string with a real one to avoid being blocked by target servers.
• Empty Line Handling: Added FILE_SKIP_EMPTY_LINES to ignore blank lines in your proxy file, preventing errors from empty proxy entries.

If you just need to read a single line (not for rotation), you have two simple options:

• Read one line at a time with fgets():

  $fp = fopen('joestar.txt', 'r');
  if ($fp) {
      $singleLine = fgets($fp); // Reads the first line of the file
      fclose($fp);
      // Use $singleLine as your variable
      echo $singleLine;
  }
  

• Read all lines into an array and pick a specific one:

  $lines = file('joestar.txt', FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
  $firstLine = $lines[0]; // Get the first line
  $randomLine = $lines[array_rand($lines)]; // Get a random line from the file
  

内容的提问来源于stack exchange，提问作者Henry cy