subzerostudio Posted November 27, 2006 Share Posted November 27, 2006 I am having trouble creating zip files on the fly using PHP. I can zip one file (about 5mb), however when i try and zip two files together (about 12mb) I get the following error in firefox:"The connection to the server was reset while the page was loading."I guess it's timing out somewhere or something?? The code i'm using is given below. I thought it could be something in the php.ini file but max_execution_time is set to 60secs and the error comes up way before thatAny ideas ??Mike[code]<?php/*** Class to dynamically create a zip file (archive)** @author Rochak Chauhan*/class createZip { var $compressedData = array(); var $centralDirectory = array(); // central directory var $endOfCentralDirectory = "\x50\x4b\x05\x06\x00\x00\x00\x00"; //end of Central directory record var $oldOffset = 0; /** * Function to create the directory where the file(s) will be unzipped * * @param $directoryName string * */ function addDirectory($directoryName) { $directoryName = str_replace("\\", "/", $directoryName); $feedArrayRow = "\x50\x4b\x03\x04"; $feedArrayRow .= "\x0a\x00"; $feedArrayRow .= "\x00\x00"; $feedArrayRow .= "\x00\x00"; $feedArrayRow .= "\x00\x00\x00\x00"; $feedArrayRow .= pack("V",0); $feedArrayRow .= pack("V",0); $feedArrayRow .= pack("V",0); $feedArrayRow .= pack("v", strlen($directoryName) ); $feedArrayRow .= pack("v", 0 ); $feedArrayRow .= $directoryName; $feedArrayRow .= pack("V",0); $feedArrayRow .= pack("V",0); $feedArrayRow .= pack("V",0); $this -> compressedData[] = $feedArrayRow; $newOffset = strlen(implode("", $this->compressedData)); $addCentralRecord = "\x50\x4b\x01\x02"; $addCentralRecord .="\x00\x00"; $addCentralRecord .="\x0a\x00"; $addCentralRecord .="\x00\x00"; $addCentralRecord .="\x00\x00"; $addCentralRecord .="\x00\x00\x00\x00"; $addCentralRecord .= pack("V",0); $addCentralRecord .= pack("V",0); $addCentralRecord .= pack("V",0); $addCentralRecord .= pack("v", strlen($directoryName) ); $addCentralRecord .= pack("v", 0 ); $addCentralRecord .= pack("v", 0 ); $addCentralRecord .= pack("v", 0 ); $addCentralRecord .= pack("v", 0 ); $ext = "\x00\x00\x10\x00"; $ext = "\xff\xff\xff\xff"; $addCentralRecord .= pack("V", 16 ); $addCentralRecord .= pack("V", $this -> oldOffset ); $this -> oldOffset = $newOffset; $addCentralRecord .= $directoryName; $this -> centralDirectory[] = $addCentralRecord; } /** * Function to add file(s) to the specified directory in the archive * * @param $directoryName string * */ function addFile($data, $directoryName) { $directoryName = str_replace("\\", "/", $directoryName); $feedArrayRow = "\x50\x4b\x03\x04"; $feedArrayRow .= "\x14\x00"; $feedArrayRow .= "\x00\x00"; $feedArrayRow .= "\x08\x00"; $feedArrayRow .= "\x00\x00\x00\x00"; $uncompressedLength = strlen($data); $compression = crc32($data); $gzCompressedData = gzcompress($data); $gzCompressedData = substr( substr($gzCompressedData, 0, strlen($gzCompressedData) - 4), 2); $compressedLength = strlen($gzCompressedData); $feedArrayRow .= pack("V",$compression); $feedArrayRow .= pack("V",$compressedLength); $feedArrayRow .= pack("V",$uncompressedLength); $feedArrayRow .= pack("v", strlen($directoryName) ); $feedArrayRow .= pack("v", 0 ); $feedArrayRow .= $directoryName; $feedArrayRow .= $gzCompressedData; $feedArrayRow .= pack("V",$compression); $feedArrayRow .= pack("V",$compressedLength); $feedArrayRow .= pack("V",$uncompressedLength); $this -> compressedData[] = $feedArrayRow; $newOffset = strlen(implode("", $this->compressedData)); $addCentralRecord = "\x50\x4b\x01\x02"; $addCentralRecord .="\x00\x00"; $addCentralRecord .="\x14\x00"; $addCentralRecord .="\x00\x00"; $addCentralRecord .="\x08\x00"; $addCentralRecord .="\x00\x00\x00\x00"; $addCentralRecord .= pack("V",$compression); $addCentralRecord .= pack("V",$compressedLength); $addCentralRecord .= pack("V",$uncompressedLength); $addCentralRecord .= pack("v", strlen($directoryName) ); $addCentralRecord .= pack("v", 0 ); $addCentralRecord .= pack("v", 0 ); $addCentralRecord .= pack("v", 0 ); $addCentralRecord .= pack("v", 0 ); $addCentralRecord .= pack("V", 32 ); $addCentralRecord .= pack("V", $this -> oldOffset ); $this -> oldOffset = $newOffset; $addCentralRecord .= $directoryName; $this -> centralDirectory[] = $addCentralRecord; } /** * Fucntion to return the zip file * * @return zipfile (archive) */ function getZippedfile() { $data = implode("", $this -> compressedData); $controlDirectory = implode("", $this -> centralDirectory); return $data. $controlDirectory. $this -> endOfCentralDirectory. pack("v", sizeof($this -> centralDirectory)). pack("v", sizeof($this -> centralDirectory)). pack("V", strlen($controlDirectory)). pack("V", strlen($data)). "\x00\x00"; } /** * * Function to force the download of the archive as soon as it is created * * @param archiveName string - name of the created archive file */ function forceDownload($archiveName) { $headerInfo = ''; if(ini_get('zlib.output_compression')) { ini_set('zlib.output_compression', 'Off'); } // Security checks if( $archiveName == "" ) { echo "<html><title>Public Photo Directory - Download </title><body><BR><B>ERROR:</B> The download file was NOT SPECIFIED.</body></html>"; exit; } elseif ( ! file_exists( $archiveName ) ) { echo "<html><title>Public Photo Directory - Download </title><body><BR><B>ERROR:</B> File not found.</body></html>"; exit; } header("Pragma: public"); header("Expires: 0"); header("Cache-Control: must-revalidate, post-check=0, pre-check=0"); header("Cache-Control: private",false); header("Content-Type: application/zip"); header("Content-Disposition: attachment; filename=".basename($archiveName).";" ); header("Content-Transfer-Encoding: binary"); header("Content-Length: ".filesize($archiveName)); readfile("$archiveName"); }}?> [/code]The code to create the zip using the above class:[code]<?phpinclude_once("createZip.php");$createZip = new createZip; $fileContents = file_get_contents("test/a.mp3"); $createZip -> addFile($fileContents, "a.mp3"); $fileContents = file_get_contents("test/b.mp3"); $createZip -> addFile($fileContents, "b.mp3"); $fileContents = file_get_contents("test/c.mp3"); $createZip -> addFile($fileContents, "c.mp3"); $fileName = "test/archive.zip";$fd = fopen ($fileName, "wb");$out = fwrite ($fd, $createZip -> getZippedfile());fclose ($fd);?>[/code] Quote Link to comment Share on other sites More sharing options...
btherl Posted November 27, 2006 Share Posted November 27, 2006 Is your memory limit set to the default of 8MB? [code=php:0]print "Memory limit is " . ini_get('memory_limit') . " bytes<br>";[/code] Quote Link to comment Share on other sites More sharing options...
subzerostudio Posted November 27, 2006 Author Share Posted November 27, 2006 no its set to 33MB:"Memory limit is 33M bytes"Mike Quote Link to comment Share on other sites More sharing options...
subzerostudio Posted November 27, 2006 Author Share Posted November 27, 2006 still trying to figure this out - anyone else got any ideas? Quote Link to comment Share on other sites More sharing options...
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