title: php multiple curl urls with while loop
body: <p>I am developing a small script and I am bit messed up with using a couple of curl and while loop.</p>
  
  <p>I want to stop processing curl at a point when one of the URL is giving me a information. Note: I have multiple curl requests.</p>
  
  <p>So my concept is,</p>
  
  <p>I have a couple of URLS, which I have to process and get information from. If information is found on a particular URL, it will be giving me a string. If no information is found, it will give me no value. So I have nearly 10 URLs to process approximately. In all cases, any one of the URL will be giving me information, so the remaining urls will be producing no value. Since processing there much URLS, latency is a issue. So suppose in the sample code below, if the url ends with value2.php gives me a result, then I immediately wanted to stop processing the other URLs. Because I already got the result and no point in running other curl. Then finally I have to print the result.</p>
  
  <p>Also I have a condition where none of the URL produce any result and it will be great if someone shows me how to handle that also.</p>
  
  <p>My sample code.</p>
  
  <pre><code>&lt;?php
  ///functions here
  do {
  
  $ch = curl_init();
  curl_setopt($ch, CURLOPT_URL,"example[dot]com/value1.php?process=$param");
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
  $combined = curl_exec ($ch);
  curl_close ($ch);
  
  $ch = curl_init();
  curl_setopt($ch, CURLOPT_URL,"example[dot]com/value2.php?process=$param");
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
  $combined = curl_exec ($ch);
  curl_close ($ch);
  
  
  $ch = curl_init();
  curl_setopt($ch, CURLOPT_URL,"example[dot]com/value3.php?process=$param");
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
  $combined = curl_exec ($ch);
  curl_close ($ch);
  
  
  $ch = curl_init();
  curl_setopt($ch, CURLOPT_URL,"example[dot]com/value4.php?process=$param");
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
  $combined = curl_exec ($ch);
  curl_close ($ch);
  
  
  $ch = curl_init();
  curl_setopt($ch, CURLOPT_URL,"example[dot]com/value5.php?process=$param");
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
  $combined = curl_exec ($ch);
  curl_close ($ch);
  
  
  $ch = curl_init();
  curl_setopt($ch, CURLOPT_URL,"example[dot]com/value6.php?process=$param");
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
  $combined = curl_exec ($ch);
  curl_close ($ch);
  
  
  $ch = curl_init();
  curl_setopt($ch, CURLOPT_URL,"example[dot]com/value7.php?process=$param");
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
  $combined = curl_exec ($ch);
  curl_close ($ch);
  
  
  $ch = curl_init();
  curl_setopt($ch, CURLOPT_URL,"example[dot]com/value8.php?process=$param");
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
  $combined = curl_exec ($ch);
  curl_close ($ch);
  
  
  $ch = curl_init();
  curl_setopt($ch, CURLOPT_URL,"example[dot]com/value9.php?process=$param");
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
  $combined = curl_exec ($ch);
  curl_close ($ch);
  
  $ch = curl_init();
  curl_setopt($ch, CURLOPT_URL,"example[dot]com/value10.php?process=$param");
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
  $combined = curl_exec ($ch);
  curl_close ($ch);
  
  } while (strlen($combined) != 0);
  echo $combied;
  
  ///functions here
  
  ?&gt;
  </code></pre>