本篇文章主要介绍php在线压缩zip文件的方法，感兴趣的朋友参考下，希望对大家有所帮助。
代码如下：
<?php//在URL后参加 ?pwd=密码 查看生成密码$password = '8baa717e6265d1c1d762cc896151f821'; //l23?><!DOCTYPE html><html><head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>php ZIP压缩程序</title><style type="text/css"><!--html{background:#f9f9f9;}body{background:#fff;color:#333;font-family:sans-serif;margin:2em auto;width:700px;padding:1em 2em;-moz-border-radius:11px;-khtml-border-radius:11px;-webkit-border-radius:11px;border-radius:11px;border:1px solid #dfdfdf;}a{color:#2583ad;text-decoration:none;}a:hover{color:#d54e21;}h1{border-bottom:1px solid #dadada;clear:both;color:#666;font:24px Georgia,"Times New Roman",Times,serif;margin:5px 0 0 -4px;padding:0;padding-bottom:7px;}h2{font-size:16px;}p,li,dd,dt{padding-bottom:2px;font-size:12px;line-height:18px;}code,.code{font-size:13px;}ul,ol,dl{padding:5px 5px 5px 22px;}a img{border:0;}abbr{border:0;font-variant:normal;}#logo{margin:6px 0 14px 0;border-bottom:none;text-align:center;}.step{margin:20px 0 15px;}.step,th{text-align:left;padding:0;}.submit input,.button,.button-secondary{font-family:sans-serif;text-decoration:none;font-size:14px!important;line-height:16px;padding:6px 12px;cursor:pointer;border:1px solid #bbb;color:#464646;-moz-border-radius:15px;-khtml-border-radius:15px;-webkit-border-radius:15px;border-radius:15px;-moz-box-sizing:content-box;-webkit-box-sizing:content-box;-khtml-box-sizing:content-box;box-sizing:content-box;}.button:hover,.button-secondary:hover,.submit input:hover{color:#000;border-color:#666;}textarea{border:1px solid #bbb;-moz-border-radius:3px;-khtml-border-radius:3px;-webkit-border-radius:3px;border-radius:3px;}.form-table{border-collapse:collapse;margin-top:1em;width:100%;}.form-table td{margin-bottom:9px;padding:10px;border-bottom:8px solid #fff;font-size:12px;}.form-table th{font-size:13px;text-align:left;padding:16px 10px 10px 10px;border-bottom:8px solid #fff;width:130px;vertical-align:top;}.form-table tr{background:#f3f3f3;}.form-table code{line-height:18px;font-size:18px;}.form-table p{margin:4px 0 0 0;font-size:11px;}.form-table input{line-height:20px;font-size:15px;padding:2px;}.form-table th p{font-weight:normal;}#error-page{margin-top:50px;}#error-page p{font-size:12px;line-height:18px;margin:25px 0 20px;}#error-page code,.code{font-family:Consolas,Monaco,monospace;}#pass-strength-result{background-color:#eee;border-color:#ddd!important;border-style:solid;border-width:1px;margin:5px 5px 5px 1px;padding:5px;text-align:center;width:200px;display:none;}#pass-strength-result.bad{background-color:#ffb78c;border-color:#ff853c!important;}#pass-strength-result.good{background-color:#ffec8b;border-color:#fc0!important;}#pass-strength-result.short{background-color:#ffa0a0;border-color:#f04040!important;}#pass-strength-result.strong{background-color:#c3ff88;border-color:#8dff1c!important;}.message{border:1px solid #e6db55;padding:.3em .6em;margin:5px 0 15px;background-color:#ffffe0;}.mydirname {color:#F00;}.myfilename {color:#649ABE;}.currentdir {font-size:14px;font-family: Georgia, Consolas;font-weight:bold;}#footer {text-align:center;margin-top:20px;}--></style></head> <body> <form name="myform" id="myform" method="post" action="<?php echo $_SERVER['PHP_SELF'];?>"><h1 style="color:#2583ad;">在线压缩ZIP文件程序</h1><br> <p> <p>使用方法:选定要压缩的文件或目录（包含子目录），即可开始压缩。压缩的结果保留原来的目录结构。<br /> <?php if(isset($_REQUEST['pwd']) && md5($_REQUEST['pwd']) == $password) echo '当前目录：<span>'. dirname(__FILE__) . '</span> <a href="'. $_SERVER['PHP_SELF']. '">退出</a>'; else if(isset($_GET['pwd']) ) echo '密码值：<span>'. md5($_GET['pwd']) . '</span>'; else echo 'Tips:在URL后参加<span>?pwd=密码</span> 查看生成密码.'; ?> </p></p><?if(!isset($_REQUEST["myaction"])):?><table width="100%" border="0" cellspacing="0" cellpadding="0"> <tr> <td width="11%">验证密码: </td> <td width="89%"><input name="pwd" type="password" id="password" size="30" onkeydown="if(event.ctrlKey&&event.keyCode==13){document.getElementById('login').click();return false};"></td> </tr> <tr> <td><input name="myaction" type="hidden" id="myaction" value="dolist"></td> <td><input type="submit" name="Submit" id="login" value=" 进 入 "></td> </tr> </table> <ｓｃｒｉｐｔ type="text/javascript"> document.getElementById('password').focus(); </ｓｃｒｉｐｔ><? elseif($_REQUEST["myaction"]=="dolist"): if(!isset($_REQUEST['pwd']) || empty($_REQUEST['pwd']) ) die('请输入密码! <a href="'. $_SERVER['PHP_SELF']. '">Again</a>'); if(md5($_REQUEST['pwd']) != $password) die('输入的密码不正确！<a href="'. $_SERVER['PHP_SELF']. '">Again</a>');echo '选择要排除的目录(相对路径，以英文半角逗号分隔):<br />';echo '<input type="text" id="toexlude" name="toexlude" size="100" /><br />'; echo "选择要压缩的文件或目录：<br/>"; $fdir = opendir('./'); while($file=readdir($fdir)){ if($file=='.'|| $file=='..' ) continue; echo "<input name='dfile[]' type='checkbox' value='$file' ".($file==basename(__FILE__)?"":"checked")."> "; if(is_file($file)){ echo "<span>文件: $file</span><br>"; }else{ echo "<span>目录: $file</span><br>"; } }?><br>压缩文件保存到目录:<input name="todir" type="text" id="todir" value="_zipfiles<?php echo substr(md5(time()),0,8);?>_" size="20">(留空为本目录,必须有写入权限)<br>压缩文件名称:<input name="zipname" type="text" id="zipname" value="backup_<?php echo substr(md5(__FILE__),0,8);?>.zip" size="15">(.zip)<br><br><input name="pwd" type="hidden" id="password" value="<?php echo $_POST['pwd'];?>"><input name="myaction" type="hidden" id="myaction" value="dozip"><input type='button' value='反选' onclick='selrev();'><input type="submit" name="Submit" value=" 开始压缩 "><ｓｃｒｉｐｔ language='javascript'>function selrev() { with(document.getElementById('myform')){ for(i=0;i<elements.length;i++) { thiselm = elements[i]; if(thiselm.name.match(/dfile\[]/)) thiselm.checked = !thiselm.checked; } }}</ｓｃｒｉｐｔ><? elseif($_REQUEST["myaction"]=="dozip"): // set_time_limit(0); class PHPzip{ var $file_count = 0 ; var $datastr_len = 0; var $dirstr_len = 0; var $filedata = ''; //该变量只被类外部程序访问 var $gzfilename; var $fp; var $dirstr=''; /* 返回文件的修改时间格式. 只为本类内部函数调用. */ function unix2DosTime($unixtime = 0) { $timearray = ($unixtime == 0) ? getdate() : getdate($unixtime); if ($timearray['year'] < 1980) { $timearray['year'] = 1980; $timearray['mon'] = 1; $timearray['mday'] = 1; $timearray['hours'] = 0; $timearray['minutes'] = 0; $timearray['seconds'] = 0; } return (($timearray['year'] - 1980) << 25) | ($timearray['mon'] << 21) | ($timearray['mday'] << 16) | ($timearray['hours'] << 11) | ($timearray['minutes'] << 5) | ($timearray['seconds'] >> 1); } /* 初始化文件,建立文件目录, 并返回文件的写入权限. */ function startfile($path = 'myzip.zip'){ $this->gzfilename=$path; $mypathdir=array(); do{ $mypathdir[] = $path = dirname($path); }while($path != '.'); @end($mypathdir); do{ $path = @current($mypathdir); @mkdir($path); }while(@prev($mypathdir)); if($this->fp=@fopen($this->gzfilename,"w")){ return true; } return false; } /* 添加一个文件到 zip 压缩包中. */ function addfile($data, $name){ $name = str_replace('\\', '/', $name); if(strrchr($name,'/')=='/') return $this->adddir($name); $dtime = dechex($this->unix2DosTime()); $hexdtime = '\x' . $dtime[6] . $dtime[7] . '\x' . $dtime[4] . $dtime[5] . '\x' . $dtime[2] . $dtime[3] . '\x' . $dtime[0] . $dtime[1]; ｅｖａｌ('$hexdtime = "' . $hexdtime . '";'); $unc_len = strlen($data); $crc = crc32($data); $zdata = gzcompress($data); $c_len = strlen($zdata); $zdata = substr(substr($zdata, 0, strlen($zdata) - 4), 2); //新添文件内容格式化: $datastr = "\x50\x4b\x03\x04"; $datastr .= "\x14\x00"; // ver needed to extract $datastr .= "\x00\x00"; // gen purpose bit flag $datastr .= "\x08\x00"; // compression method $datastr .= $hexdtime; // last mod time and date $datastr .= pack('V', $crc); // crc32 $datastr .= pack('V', $c_len); // compressed filesize $datastr .= pack('V', $unc_len); // uncompressed filesize $datastr .= pack('v', strlen($name)); // length of filename $datastr .= pack('v', 0); // extra field length $datastr .= $name; $datastr .= $zdata; $datastr .= pack('V', $crc); // crc32 $datastr .= pack('V', $c_len); // compressed filesize $datastr .= pack('V', $unc_len); // uncompressed filesize fwrite($this->fp,$datastr); //写入新的文件内容 $my_datastr_len = strlen($datastr); unset($datastr); //新添文件目录信息 $dirstr = "\x50\x4b\x01\x02"; $dirstr .= "\x00\x00"; // version made by $dirstr .= "\x14\x00"; // version needed to extract $dirstr .= "\x00\x00"; // gen purpose bit flag $dirstr .= "\x08\x00"; // compression method $dirstr .= $hexdtime; // last mod time & date $dirstr .= pack('V', $crc); // crc32 $dirstr .= pack('V', $c_len); // compressed filesize $dirstr .= pack('V', $unc_len); // uncompressed filesize $dirstr .= pack('v', strlen($name) ); // length of filename $dirstr .= pack('v', 0 ); // extra field length $dirstr .= pack('v', 0 ); // file comment length $dirstr .= pack('v', 0 ); // disk number start $dirstr .= pack('v', 0 ); // internal file attributes $dirstr .= pack('V', 32 ); // external file attributes - 'archive' bit set $dirstr .= pack('V',$this->datastr_len ); // relative offset of local header $dirstr .= $name; $this->dirstr .= $dirstr; //目录信息 $this -> file_count ++; $this -> dirstr_len += strlen($dirstr); $this -> datastr_len += $my_datastr_len; } function adddir($name){ $name = str_replace("\\", "/", $name); $datastr = "\x50\x4b\x03\x04\x0a\x00\x00\x00\x00\x00\x00\x00\x00\x00"; $datastr .= pack("V",0).pack("V",0).pack("V",0).pack("v", strlen($name) ); $datastr .= pack("v", 0 ).$name.pack("V", 0).pack("V", 0).pack("V", 0); fwrite($this->fp,$datastr); //写入新的文件内容 $my_datastr_len = strlen($datastr); unset($datastr); $dirstr = "\x50\x4b\x01\x02\x00\x00\x0a\x00\x00\x00\x00\x00\x00\x00\x00\x00"; $dirstr .= pack("V",0).pack("V",0).pack("V",0).pack("v", strlen($name) ); $dirstr .= pack("v", 0 ).pack("v", 0 ).pack("v", 0 ).pack("v", 0 ); $dirstr .= pack("V", 16 ).pack("V",$this->datastr_len).$name; $this->dirstr .= $dirstr; //目录信息 $this -> file_count ++; $this -> dirstr_len += strlen($dirstr); $this -> datastr_len += $my_datastr_len; } function createfile(){ //压缩包结束信息,包括文件总数,目录信息读取指针位置等信息 $endstr = "\x50\x4b\x05\x06\x00\x00\x00\x00" . pack('v', $this -> file_count) . pack('v', $this -> file_count) . pack('V', $this -> dirstr_len) . pack('V', $this -> datastr_len) . "\x00\x00"; fwrite($this->fp,$this->dirstr.$endstr); fclose($this->fp); } } if(!trim($_REQUEST['zipname'])) $_REQUEST['zipname'] = 'backup_'.substr(md5(__FILE__),0,8). '.zip'; else $_REQUEST['zipname'] = trim($_REQUEST['zipname']); if(!strrchr(strtolower($_REQUEST['zipname']),'.')=='.zip') $_REQUEST['zipname'] .= ".zip"; $_REQUEST['todir'] = str_replace('\\','/',trim($_REQUEST['todir'])); if(!strrchr(strtolower($_REQUEST['todir']),'/')=='/') $_REQUEST['todir'] .= "/"; if($_REQUEST['todir']=="/") $_REQUEST['todir'] = "./"; function listfiles($dir="."){ global $faisunZIP; $sub_file_num = 0; if(is_file($dir)){ if(realpath($faisunZIP->gzfilename)!=realpath($dir)){ $faisunZIP -> addfile(implode('',file($dir)),$dir); return 1; } return 0; } $handle=opendir($dir); //添加排除 $to_exlude = !empty($_POST['toexlude']) ? $_POST['toexlude'] :''; $exlude = empty($to_exlude) ? array() : explode(',',$to_exlude); while ($file = readdir($handle)) { if($file=="."||$file==".." || $file == 'wp-content' )continue; if(is_dir("$dir/$file") && !in_array("$dir/$file",$exlude) ) { $sub_file_num += listfiles("$dir/$file"); } else { if(realpath($faisunZIP ->gzfilename)!=realpath("$dir/$file")){ $faisunZIP -> addfile(implode('',file("$dir/$file")),"$dir/$file"); $sub_file_num ++; } } } closedir($handle); if(!$sub_file_num) $faisunZIP -> addfile("","$dir/"); return $sub_file_num; } function num_bitunit($num){ $bitunit=array(' B',' KB',' MB',' GB'); for($key=0;$key<count($bitunit);$key++){ if($num>=pow(2,10*$key)-1){ //1023B 会显示为 1KB $num_bitunit_str=(ceil($num/pow(2,10*$key)*100)/100)." $bitunit[$key]"; } } return $num_bitunit_str; } if(is_array($_REQUEST['dfile'])){ $faisunZIP = new PHPzip; if($faisunZIP -> startfile($_REQUEST['todir'].$_REQUEST['zipname'])){ echo "正在添加压缩文件...<br><br>"; $filenum = 0; foreach($_REQUEST['dfile'] as $file){ if(is_file($file)){ echo "<span>文件: $file </span><br>"; }else{ echo "<span>目录: $file </span><br>"; } $filenum += listfiles($file); } $faisunZIP -> createfile(); echo "<br>压缩完成,共添加 $filenum 个文件.<br /><a href='" .$_REQUEST['todir'].$_REQUEST['zipname']. "'>". $_REQUEST['todir'].$_REQUEST['zipname']." (".num_bitunit(filesize("$_REQUEST[todir]$_REQUEST[zipname]")).")</a>"; }else{ echo $_REQUEST['todir'].$_REQUEST['zipname'].'不能写入,请检查路径或权限是否正确.<br>'; } }else{ echo "没有选择的文件或目录.<br>"; } endif; ?> </form> <p id="footer"> <p> <a href="javascript:;" onclick="scrollTo(0,0);" title="返回顶部">TOP</a></p> </p></body></html>总结：以上就是本篇文的全部内容，希望能对大家的学习有所帮助。
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