วิธีการส่งออก Export ฐานข้อมูล Database MySQL ด้วยภาษา PHP (.sql)
Syntax
string backup_tables(string $host ,string $user, string $pass, string $database,string $tables = '*')
สร้างฟังก์ชัน
/* backup the db OR just a table */
function backup_tables($host,$user,$pass,$database,$tables = '*'){
$link = mysql_connect($host,$user,$pass);
mysql_select_db($database,$link);
//get all of the tables
if($tables == '*'){
$tables = array();
$result = mysql_query('SHOW TABLES');
while($row = mysql_fetch_row($result)){
$tables[] = $row[0];
}
}
else{
$tables = is_array($tables) ? $tables : explode(',',$tables);
}
//cycle through
foreach($tables as $table){
$result = mysql_query('SELECT * FROM '.$table);
$num_fields = mysql_num_fields($result);
$return.= 'DROP TABLE '.$table.';';
$row2 = mysql_fetch_row(mysql_query('SHOW CREATE TABLE '.$table));
$return.= "\n\n".$row2[1].";\n\n";
for ($i = 0; $i < $num_fields; $i++) {
while($row = mysql_fetch_row($result)){
$return.= 'INSERT INTO '.$table.' VALUES(';
for($j=0; $j < $num_fields; $j++) {
$row[$j] = addslashes($row[$j]);
$row[$j] = ereg_replace("\n","\\n",$row[$j]);
if (isset($row[$j])) { $return.= '"'.$row[$j].'"' ; } else { $return.= '""'; }
if ($j < ($num_fields-1)) { $return.= ','; }
}
$return.= ");\n";
}
}
$return.="\n\n\n";
}
//save file
$handle = fopen('db-backup-'.time().'-'.(md5(implode(',',$tables))).'.sql','w+');
fwrite($handle,$return);
fclose($handle);
}