How to prevent this script from echoing anything?

Question

The script executes multiple URL's at once, and automatically echo the content of the URL, I want to prevent this script from echoing anything, but I don't see any line like echo 'something'; except the lines I commented out.

This is the script:


    function batch_execute($urls)
        {
            $i            = 0;
            $block        = array();
            $curl_handles = array();

            foreach ($urls as $url)
            {
                $curl_handles[$url] = curl_init();
                curl_setopt($curl_handles[$url], CURLOPT_URL, $url);
                curl_setopt($curl_handles[$url], CURLOPT_CONNECTTIMEOUT, 100);
            }

            $curl_multi_handle = curl_multi_init();

            foreach ($curl_handles as $a_curl_handle)
            {
                $i++;

                curl_multi_add_handle($curl_multi_handle, $a_curl_handle);

                $block[] = $a_curl_handle;

                if (($i % 10 == 0) or ($i == count($curl_handles)))
                {
                    $running = NULL;

                    do
                    {
                        $running_before = $running;

                        curl_multi_exec($curl_multi_handle, $running);

                        if ($running != $running_before)
                        {
    //                      echo("Waiting for $running sites to finish...\n");
                        }

                    } while ($running > 0);

                    foreach ($block as $handle)
                    {
    //                  $code = curl_getinfo($handle, CURLINFO_HTTP_CODE);

    //                  $curl_errno = curl_errno($handle);

                        $curl_error = curl_error($handle);

                        if ($curl_error)
                        {
    //                      echo("    *** cURL error: ($curl_errno) $curl_error\n");
                        }

                        curl_multi_remove_handle($curl_multi_handle, $handle);
                    }

                    $block = array();
                }
            }

            curl_multi_close($curl_multi_handle);
        }

Help :)

Remember to turn off the output buffer when you're finished (and clean it). ob_end_clean() — Thomas Clayson
Don't flush... clean! haha, flush will output to the browser. use ob_end_clean() — Thomas Clayson

Matt Matt · Accepted Answer · 2012-08-16T14:37:05

Turning on the output buffer with ob_start() will capture all output before printing to the screen.

Then close the buffer with either ob_end_clean() or ob_end_flush(). Flush will print the contents of the buffer before closing it.

Take a look here for more information on output controls.

How to prevent this script from echoing anything?

2 Answers