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PHP/cURL File Download with Progress Bar #curl
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| <?php | |
| //output buffer | |
| ob_start(); | |
| //create javascript progress bar | |
| echo '<html><head> | |
| <script type="text/javascript"> | |
| function updateProgress(percentage) { | |
| document.getElementById(\'progress\').value = percentage; | |
| } | |
| </script></head><body> | |
| <progress id="prog" value="0" max="100.0"></progress> | |
| '; | |
| //initilize progress bar | |
| ob_flush(); | |
| flush(); | |
| //save progress to variable instead of a file | |
| $temp_progress = ''; | |
| $targetFile = fopen( 'testfile.iso', 'w' ); | |
| $ch = curl_init( 'http://ftp.free.org/mirrors/releases.ubuntu-fr.org/11.04/ubuntu-11.04-desktop-i386-fr.iso' ); | |
| curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); | |
| curl_setopt( $ch, CURLOPT_NOPROGRESS, false ); | |
| curl_setopt( $ch, CURLOPT_PROGRESSFUNCTION, 'progressCallback' ); | |
| curl_setopt( $ch, CURLOPT_FILE, $targetFile ); | |
| curl_exec( $ch ); | |
| fclose( $targetFile ); | |
| //must add $resource to the function after a newer php version. Previous comments states php 5.5 | |
| function progressCallback( $resource, $download_size, $downloaded_size, $upload_size, $uploaded_size ) | |
| { | |
| static $previousProgress = 0; | |
| if ( $download_size == 0 ) { | |
| $progress = 0; | |
| } else { | |
| $progress = round( $downloaded_size * 100 / $download_size ); | |
| } | |
| if ( $progress > $previousProgress) | |
| { | |
| $previousProgress = $progress; | |
| $temp_progress = $progress; | |
| } | |
| //update javacsript progress bar to show download progress | |
| echo '<script>document.getElementById(\'prog\').value = '.$progress.';</script>'; | |
| ob_flush(); | |
| flush(); | |
| //sleep(1); // just to see effect | |
| } | |
| //if we get here, the download has completed | |
| echo "Done"; | |
| //flush just to be sure | |
| ob_flush(); | |
| flush(); | |
| ?> |
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