PHP Curl functions

php_curl_copy.php

<?php
//via http://stackoverflow.com/questions/6409462/downloading-a-large-file-using-curl

function curl_copy($from = '', $to = '', $proxy = '')
{
    if(empty($from) || empty($to))
    {
        return false;
    }

    $has_error = false;
    $fp = fopen ($to, 'w+');//This is the file where we save the    information
    $ch = curl_init($from);//Here is the file we are downloading, replace spaces with %20
    curl_setopt($ch, CURLOPT_TIMEOUT, 3600); //1 hour
    curl_setopt($ch, CURLOPT_FILE, $fp); // write curl response to file
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);

    //чтобы избежать зависания при скачке (на самом деле отключает буфферизацию TCP)
    //curl_setopt($ch, CURLOPT_TCP_NODELAY, 1);

    curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 60);

    curl_setopt($ch, CURLOPT_VERBOSE, true);

    if(!empty($proxy))
    {
        curl_setopt($ch, CURLOPT_PROXY, $proxy);
    }

    $verbose = fopen('php://temp', 'rw+');
    curl_setopt($ch, CURLOPT_STDERR, $verbose);

    if(false === $result = curl_exec($ch))
    {
        $has_error = true;
    }

    if(curl_errno($ch) != 0)
    {
        $has_error = true;

        error_log('Curl error ('.curl_errno($ch).'): '.curl_error($ch));
        echo 'Curl error '.(curl_errno($ch)).': '.curl_error($ch);
    }


    $curlVersion = curl_version();
    $result_str = (string)$result;
    extract(curl_getinfo($ch));
    $metrics = <<<EOD
URL....: $url
Code...: $http_code ($redirect_count redirect(s) in $redirect_time secs)
Content: $content_type Size: $download_content_length (Own: $size_download) Filetime: $filetime
Time...: $total_time Start @ $starttransfer_time (DNS: $namelookup_time Connect: $connect_time Request: $pretransfer_time)
Speed..: Down: $speed_download (avg.) Up: $speed_upload (avg.)
Curl...: v{$curlVersion['version']}
Bool...: $result_str

EOD;

    if($download_content_length != $size_download)
    {
        echo $metrics;

        rewind($verbose);
        $verboseLog = stream_get_contents($verbose);

        echo "Verbose information:\n ".$verboseLog."\n";

        $has_error = true;
    }
    else
    {
        echo $download_content_length.' == '.$size_download.' '.$url."\n";
    }

    curl_close($ch);
    fclose($fp);

    if($has_error)
    {
        return false;
    }

    return true;
}

php_curl_get_headers.php

<?php
//via http://php.net/manual/en/function.get-headers.php#90434

function get_headers_curl($url, $proxy = '')
{
    $return = array();
    $ch = curl_init();

    curl_setopt($ch, CURLOPT_URL,            $url);
    curl_setopt($ch, CURLOPT_HEADER,         true);
    curl_setopt($ch, CURLOPT_NOBODY,         true);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_TIMEOUT,        10);

    if(!empty($proxy))
    {
        curl_setopt($ch, CURLOPT_PROXY, $proxy);
    }

    $r = curl_exec($ch);

    $ex = explode("\n", $r);
    foreach($ex as $val)
    {
        $val = trim($val);
        if(!empty($val))
        {
            if(stripos($val, ': ') !== false)
            {
                $exp = explode(': ', $val, 2);
                $return[$exp[0]] = $exp[1];
            }
            else
            {
                $return[] = $val;
            }
        }
    }

    return $return;
}

php_curl_progress.php

<?php
//via http://stackoverflow.com/questions/13958303/curl-download-progress-in-php

echo "<pre>";
echo "Loading ...";

ob_flush();
flush();

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "http://stackoverflow.com");
//curl_setopt($ch, CURLOPT_BUFFERSIZE,128);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_PROGRESSFUNCTION, 'progress');
curl_setopt($ch, CURLOPT_NOPROGRESS, false); // needed to make progress function work
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_USERAGENT, $_SERVER['HTTP_USER_AGENT']);
$html = curl_exec($ch);
curl_close($ch);


function progress($resource,$download_size, $downloaded, $upload_size, $uploaded)
{
    if($download_size > 0)
         echo $downloaded / $download_size  * 100;
    ob_flush();
    flush();
    sleep(1); // just to see effect
}

echo "Done";
ob_flush();
flush();

php_curl_request_info.php

<?php
//via http://stackoverflow.com/questions/3757071/php-debugging-curl
//via http://stackoverflow.com/a/9571305/367456

//after curl_exec
$curlVersion = curl_version();
extract(curl_getinfo($curlHandle));
$metrics = <<<EOD
URL....: $url
Code...: $http_code ($redirect_count redirect(s) in $redirect_time secs)
Content: $content_type Size: $download_content_length (Own: $size_download) Filetime: $filetime
Time...: $total_time Start @ $starttransfer_time (DNS: $namelookup_time Connect: $connect_time Request: $pretransfer_time)
Speed..: Down: $speed_download (avg.) Up: $speed_upload (avg.)
Curl...: v{$curlVersion['version']}
EOD;

php_curl_verbose_info.php

<?php
//via http://stackoverflow.com/questions/3757071/php-debugging-curl

// CURLOPT_VERBOSE: TRUE to output verbose information. Writes output to STDERR, 
// or the file specified using CURLOPT_STDERR.
curl_setopt($curlhandle, CURLOPT_VERBOSE, true);

$verbose = fopen('php://temp', 'rw+');
curl_setopt($curlHandle, CURLOPT_STDERR, $verbose);

if (false === $result = curl_exec($curlHandle)) {
    printf("Curl error (#%d): %s\n", curl_errno($curlHandle),
           curl_error($curlHandle));
}

rewind($verbose);
$verboseLog = stream_get_contents($verbose);

echo "Verbose info:\n".$verboseLog."\n";