下面是php將mysql數據庫整庫導出生成sql文件的詳細代碼，希望對大家在用php編程時備份數據有一定幫助
由網上搜到，有更改。 文件名：db_backup.php 源代碼如下： 代碼如下: <?php ini_set("max_execution_time", "180");//避免數據量過大，導出不全的情況出現。 /* 程序功能：mysql數據庫備份功能 作者：唐小剛 說明： 本程序主要是從mysqladmin中提取出來，並作出一定的調整，希望對大家在用php編程時備份數據有一定幫助. 如果不要備份結構：請屏掉這句:echo get_table_structure($dbname, $table, $crlf).";$crlf$crlf"; 如果不要備份內容：請屏掉這句:echo get_table_content($dbname, $table, $crlf); 修改者：何錦盛 修改時間：2009/11/7 修改內容：新增函數get_table_structure，注釋掉了函數get_table_def，目的是獲得更豐富的建表時的細節（如：ENGINE=InnoDB AUTO_INCREMENT=80 DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci COMMENT='商品信息變更信息'） */ $host="";//數據庫地址 $dbname="";//這裡配置數據庫名 $username="";//用戶名 $passw="";//這裡配置密碼 $filename=date("Y-m-d_H-i-s")."-".$dbname.".sql"; header("Content-disposition:filename=".$filename);//所保存的文件名 header("Content-type:application/octetstream"); header("Pragma:no-cache"); header("Expires:0"); //備份數據 $i = 0; $crlf="rn"; global $dbconn; $dbconn = mysql_connect($host,$username,$passw]);//數據庫主機，用戶名，密碼 $db = mysql_select_db($dbname,$dbconn); mysql_query("SET NAMES 'utf8'"); $tables =mysql_list_tables($dbname,$dbconn); $num_tables = @mysql_numrows($tables); print "-- filename=".$filename; while($i < $num_tables) { $table=mysql_tablename($tables,$i); print $crlf; echo get_table_structure($dbname, $table, $crlf).";$crlf$crlf"; //echo get_table_def($dbname, $table, $crlf).";$crlf$crlf"; echo get_table_content($dbname, $table, $crlf); $i++; } /*新增的獲得詳細表結構*/ function get_table_structure($db,$table,$crlf) { global $drop; $schema_create = ""; if(!empty($drop)){ $schema_create .= "DROP TABLE IF EXISTS `$table`;$crlf";} $result =mysql_db_query($db, "SHOW CREATE TABLE $table"); $row=mysql_fetch_array($result); $schema_create .= $crlf."-- ".$row[0].$crlf; $schema_create .= $row[1].$crlf; Return $schema_create; } /* //原來別人的取得數據庫結構，但不完整 function get_table_def($db,$table,$crlf) { global $drop; $schema_create = ""; if(!empty($drop)) $schema_create .= "DROP TABLE IF EXISTS `$table`;$crlf"; $schema_create .= "CREATE TABLE `$table` ($crlf"; $result = mysql_db_query($db, "SHOW full FIELDS FROM $table"); while($row = mysql_fetch_array($result)) { $schema_create .= " `$row[Field]` $row[Type]"; if(isset($row["Default"]) && (!empty($row["Default"]) || $row["Default"] == "0")) $schema_create .= " DEFAULT '$row[Default]'"; if($row["Null"] != "YES") $schema_create .= " NOT NULL"; if($row["Extra"] != "") $schema_create .= " $row[Extra]"; if($row["Comment"] != "") $schema_create .= " Comment '$row[Comment]'"; $schema_create .= ",$crlf"; } $schema_create = ereg_replace(",".$crlf."$", "", $schema_create); $result = mysql_db_query($db, "SHOW KEYS FROM $table"); while($row = mysql_fetch_array($result)) { $kname=$row['Key_name']; if(($kname != "PRIMARY") && ($row['Non_unique'] == 0)) $kname="UNIQUE|$kname"; if(!isset($index[$kname])) $index[$kname] = array(); $index[$kname][] = $row['Column_name']; } while(list($x,$columns) = @each($index)) { $schema_create .= ",$crlf"; if($x == "PRIMARY") $schema_create .= " PRIMARY KEY (".implode($columns,", ") . ")"; elseif (substr($x,0,6) == "UNIQUE") $schema_create .= " UNIQUE ".substr($x,7)." (" . implode($columns, ", ") . ")"; else $schema_create .= " KEY $x (" . implode($columns, ", ") . ")"; } $schema_create .= "$crlf)"; return (stripslashes($schema_create)); } */ //獲得表內容 function get_table_content($db, $table, $crlf) { $schema_create = ""; $temp = ""; $result = mysql_db_query($db, "SELECT * FROM $table"); $i = 0; while($row = mysql_fetch_row($result)) { $schema_insert = "INSERT INTO `$table` VALUES ("; for($j=0; $j<mysql_num_fields($result);$j++) { if(!isset($row[$j])) $schema_insert .= " NULL,"; elseif($row[$j] != "") $schema_insert .= " '".addslashes($row[$j])."',"; else $schema_insert .= " '',"; } $schema_insert = ereg_replace(",$", "",$schema_insert); $schema_insert .= ");$crlf"; $temp = $temp.$schema_insert ; $i++; } return $temp; } ?>
