压缩类zipclass.php
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1 <?php 2 # 3 # PHPZip v1.2 by Sext () 2002-11-18 4 # (Changed: 2003-03-01) 5 # 6 # Makes zip archive 7 # 8 # Based on "Zip file creation class", uses zLib 9 # 10 # Examples in sample1.php, sample2.php and sample3.php 11 # 12 class PHPZip 13 { 14 function Zip($dir, $zipfilename) 15 { 16 if (@function_exists('gzcompress')) { 17 $curdir = getcwd(); 18 if (is_array($dir)) { 19 $filelist = $dir; 20 } else { 21 $filelist = $this->GetFileList($dir); 22 } 23 24 if ((!empty($dir)) && (!is_array($dir)) && (file_exists($dir))) 25 chdir($dir); 26 else 27 chdir($curdir); 28 if (count($filelist) > 0) { 29 foreach ($filelist as $filename) { 30 if (is_file($filename)) { 31 $fd = fopen($filename, "r"); 32 $content = fread($fd, filesize($filename)); 33 fclose($fd); 34 if (is_array($dir)) 35 $filename = basename($filename); 36 $this->addFile($content, $filename); 37 } 38 } 39 $out = $this->file(); 40 chdir($curdir); 41 $fp = fopen($zipfilename, "w"); 42 fwrite($fp, $out, strlen($out)); 43 fclose($fp); 44 } 45 return 1; 46 } else 47 return 0; 48 } 49 function GetFileList($dir) 50 { 51 if (file_exists($dir)) { 52 $args = func_get_args(); 53 $pref = $args[1]; 54 55 $dh = opendir($dir); 56 while ($files = readdir($dh)) { 57 if (($files != ".") && ($files != "..")) { 58 if (is_dir($dir . $files)) { 59 $curdir = getcwd(); 60 chdir($dir . $files); 61 $file = array_merge($file, $this->GetFileList("", "$pref$files/")); 62 chdir($curdir); 63 } else 64 $file[] = $pref . $files; 65 } 66 } 67 closedir($dh); 68 } 69 return $file; 70 } 71 var $datasec = array(); 72 var $ctrl_dir = array(); 73 var $eof_ctrl_dir = "\x50\x4b\x05\x06\x00\x00\x00\x00"; 74 var $old_offset = 0; 75 /** 76 * Converts an Unix timestamp to a four byte DOS date and time format (date 77 * in high two bytes, time in low two bytes allowing magnitude comparison). 78 * 79 * @param integer the current Unix timestamp 80 * 81 * @return integer the current date in a four byte DOS format 82 * 83 * @access private 84 */ 85 function unix2DosTime($unixtime = 0) 86 { 87 $timearray = ($unixtime == 0) ? getdate() : getdate($unixtime); 88 if ($timearray['year'] < 1980) { 89 $timearray['year'] = 1980; 90 $timearray['mon'] = 1; 91 $timearray['mday'] = 1; 92 $timearray['hours'] = 0; 93 $timearray['minutes'] = 0; 94 $timearray['seconds'] = 0; 95 } // end if 96 return (($timearray['year'] - 1980) << 25) | ($timearray['mon'] << 21) | ($timearray['mday'] << 97 16) | ($timearray['hours'] << 11) | ($timearray['minutes'] << 5) | ($timearray['seconds'] >> 98 1); 99 } // end of the 'unix2DosTime()' method 100 101 /** 102 * Adds "file" to archive 103 * 104 * @param string file contents 105 * @param string name of the file in the archive (may contains the path) 106 * @param integer the current timestamp 107 * 108 * @access public 109 */ 110 function addFile($data, $name, $time = 0) 111 { 112 $name = str_replace('\\', '/', $name); 113 $dtime = dechex($this->unix2DosTime($time)); 114 $hexdtime = '\x' . $dtime[6] . $dtime[7] . '\x' . $dtime[4] . $dtime[5] . '\x' . 115 $dtime[2] . $dtime[3] . '\x' . $dtime[0] . $dtime[1]; 116 eval('$hexdtime = "' . $hexdtime . '";'); 117 $fr = "\x50\x4b\x03\x04"; 118 $fr .= "\x14\x00"; // ver needed to extract 119 $fr .= "\x00\x00"; // gen purpose bit flag 120 $fr .= "\x08\x00"; // compression method 121 $fr .= $hexdtime; // last mod time and date 122 // "local file header" segment 123 $unc_len = strlen($data); 124 $crc = crc32($data); 125 $zdata = gzcompress($data); 126 $c_len = strlen($zdata); 127 $zdata = substr(substr($zdata, 0, strlen($zdata) - 4), 2); // fix crc bug 128 $fr .= pack('V', $crc); // crc32 129 $fr .= pack('V', $c_len); // compressed filesize 130 $fr .= pack('V', $unc_len); // uncompressed filesize 131 $fr .= pack('v', strlen($name)); // length of filename 132 $fr .= pack('v', 0); // extra field length 133 $fr .= $name; 134 // "file data" segment 135 $fr .= $zdata; 136 // "data descriptor" segment (optional but necessary if archive is not 137 // served as file) 138 $fr .= pack('V', $crc); // crc32 139 $fr .= pack('V', $c_len); // compressed filesize 140 $fr .= pack('V', $unc_len); // uncompressed filesize 141 // add this entry to array 142 $this->datasec[] = $fr; 143 $new_offset = strlen(implode('', $this->datasec)); 144 // now add to central directory record 145 $cdrec = "\x50\x4b\x01\x02"; 146 $cdrec .= "\x00\x00"; // version made by 147 $cdrec .= "\x14\x00"; // version needed to extract 148 $cdrec .= "\x00\x00"; // gen purpose bit flag 149 $cdrec .= "\x08\x00"; // compression method 150 $cdrec .= $hexdtime; // last mod time & date 151 $cdrec .= pack('V', $crc); // crc32 152 $cdrec .= pack('V', $c_len); // compressed filesize 153 $cdrec .= pack('V', $unc_len); // uncompressed filesize 154 $cdrec .= pack('v', strlen($name)); // length of filename 155 $cdrec .= pack('v', 0); // extra field length 156 $cdrec .= pack('v', 0); // file comment length 157 $cdrec .= pack('v', 0); // disk number start 158 $cdrec .= pack('v', 0); // internal file attributes 159 $cdrec .= pack('V', 32); // external file attributes - 'archive' bit set 160 $cdrec .= pack('V', $this->old_offset); // relative offset of local header 161 $this->old_offset = $new_offset; 162 $cdrec .= $name; 163 // optional extra field, file comment goes here 164 // save to central directory 165 $this->ctrl_dir[] = $cdrec; 166 } // end of the 'addFile()' method 167 168 /** 169 * Dumps out file 170 * 171 * @return string the zipped file 172 * 173 * @access public 174 */ 175 function file() 176 { 177 $data = implode('', $this->datasec); 178 $ctrldir = implode('', $this->ctrl_dir); 179 return $data . $ctrldir . $this->eof_ctrl_dir . pack('v', sizeof($this-> 180 ctrl_dir)) . // total # of entries "on this disk" 181 pack('v', sizeof($this->ctrl_dir)) . // total # of entries overall 182 pack('V', strlen($ctrldir)) . // size of central dir 183 pack('V', strlen($data)) . // offset to start of central dir 184 "\x00\x00"; // .zip file comment length 185 } // end of the 'file()' method 186 187 } // end of the 'PHPZip' class 188 189 ?>
mysqlbak.php
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1 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> 2 <?php 3 require("./zipclass.php"); 4 //获取表的名称 5 function list_tables($database) 6 { 7 $rs = mysql_list_tables($database); 8 $tables = array(); 9 while ($row = mysql_fetch_row($rs)) { 10 $tables[] = $row[0]; 11 } 12 mysql_free_result($rs); 13 return $tables; 14 } 15 //导出数据库 16 function dump_table($table, $fp = null) 17 { 18 $need_close = false; 19 if (is_null($fp)) { 20 $fp = fopen($table . '.sql', 'w'); 21 $need_close = true; 22 } 23 $a = mysql_query("show create table `{$table}`"); 24 $row = mysql_fetch_assoc($a); 25 fwrite($fp, "DROP TABLE IF EXISTS `$table`;\n\r".$row['Create Table'] . ";\n\r"); //导出表结构 26 $rs = mysql_query("SELECT * FROM `{$table}`"); 27 while ($row = mysql_fetch_row($rs)) { 28 fwrite($fp, get_insert_sql($table, $row)); 29 } 30 mysql_free_result($rs); 31 if ($need_close) { 32 fclose($fp); 33 } 34 } 35 //导出表数据 36 function get_insert_sql($table, $row) 37 { 38 $sql = "INSERT INTO `{$table}` VALUES ("; 39 $values = array(); 40 foreach ($row as $value) { 41 $values[] = "'" . mysql_real_escape_string($value) . "'"; 42 } 43 $sql .= implode(', ', $values) . ");\n\r"; 44 return $sql; 45 } 46 //删除多余备份 留下一定数目 47 function delect_sql_zip($dir, $suffix, $num = 10) { 48 $list = scandir($dir); 49 $file = array(); 50 foreach($list as $v) { 51 $temp = substr(strrchr($v, '.'), 1); 52 if($suffix == $temp) { 53 $file[] = $v; 54 } 55 } 56 rsort($file); 57 $len = count($file); 58 if($num <= 0) { 59 $num = 1; 60 } 61 if($len > $num) { 62 for($i = $num; $i < $len; $i++) { 63 unlink($dir.$file[$i]); 64 } 65 } 66 } 67 68 ///////************************///////下面正式开始//////***************************/////// 69 $database = 'dbanme'; //数据库名 70 $dir = './mysqlbak/'; //数据库保存路径 71 if(!is_dir($dir)) { 72 mkdir($dir); 73 } 74 //设置日期为备份文件名 75 date_default_timezone_set('PRC'); 76 $t_name = date("Ymd_His"); 77 $options = array( 78 'hostname' => 'localhost', //ip地址 79 'charset' => 'utf8', //编码 80 'filename' => $database . $t_name . '.sql', //文件名 81 'username' => 'root', 82 'password' => '111111'); 83 mysql_connect($options['hostname'], $options['username'], $options['password']) or 84 die("不能连接数据库!"); 85 mysql_select_db($database) or die("数据库名称错误!"); 86 mysql_query("SET NAMES '{$options['charset']}'"); 87 $tables = list_tables($database); 88 89 $filename = $options['filename']; 90 $fp = fopen($dir.$filename, 'w'); 91 92 foreach ($tables as $table) { 93 dump_table($table, $fp); 94 } 95 fclose($fp); 96 $file_name = $dir.$options['filename']; 97 $files = array("$file_name"); 98 $z = new PHPZip(); //新建立一个zip的类 99 $z -> Zip($files, $file_name.".zip"); //$string为要压缩的文件夹目录 100 101 //删除服务器上的sql文件 102 echo "<h1>数据库备份成功！<br/>文件名为：".$options['filename'].".zip<br/>时间为：".date("Y-m-d H:i:s")."</h1>"; 103 unlink($file_name); 104 delect_sql_zip($dir,"zip", 10); 105 exit; 106 ?>
win下添加计划任务执行bat文件
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1 "C:\Program Files\Internet Explorer\iexplore.exe" "http://xxx.com/mysqlbak.php" 2 3 taskkill /f /im iexplore.exe
通过计划任务定时打开浏览器运行php脚本，脚本执行读取数据库信息，并写入文件压缩保存，扫描以前备份保留最近十个，执行完毕，关闭浏览器