我在PHP中寻找一种方法将.sql文件作为.sql文件发送到客户端下载。
我发现了一堆解决方案,我真的很喜欢通过mysqldump
(或exec()
或shell_exec()
)使用system()
命令的方法,但遗憾的是mysqldump
命令是在这种情况下我无法使用。
由于我的数据库连接也无法硬编码,我找到了很多“重新发明轮子”的解决方案,只需查询'SHOW TABLES'
并开始迭代,就像在这里:Export MySQL database using PHP only(Raju Dudhrejiya的答案)。
这完全正常,直到我注意到仅保存表格,我发现的其他类似方法也是如此。没有事件,触发器等......这很糟糕。真的很糟糕。
我需要的东西至少也支持事件,所以我的第一种方法是扩展以下方法(取自上面的链接),虽然我不知道如何继续讨论它。我想我必须以某种方式查询所有事件并在某处附加'CREATE EVENT'
语句?
有没有人做过类似的事情?
function Export_Database($host,$user,$pass,$name, $tables=false, $backup_name=false )
{
$mysqli = new mysqli($host,$user,$pass,$name);
$mysqli->select_db($name);
$mysqli->query("SET NAMES 'utf8'");
$queryTables = $mysqli->query('SHOW TABLES');
while($row = $queryTables->fetch_row())
{
$target_tables[] = $row[0];
}
if($tables !== false)
{
$target_tables = array_intersect( $target_tables, $tables);
}
foreach($target_tables as $table)
{
$result = $mysqli->query('SELECT * FROM '.$table);
$fields_amount = $result->field_count;
$rows_num=$mysqli->affected_rows;
$res = $mysqli->query('SHOW CREATE TABLE '.$table);
$TableMLine = $res->fetch_row();
$content = (!isset($content) ? '' : $content) . "\n\n".$TableMLine[1].";\n\n";
for ($i = 0, $st_counter = 0; $i < $fields_amount; $i++, $st_counter=0)
{
while($row = $result->fetch_row())
{ //when started (and every after 100 command cycle):
if ($st_counter%100 == 0 || $st_counter == 0 )
{
$content .= "\nINSERT INTO ".$table." VALUES";
}
$content .= "\n(";
for($j=0; $j<$fields_amount; $j++)
{
$row[$j] = str_replace("\n","\\n", addslashes($row[$j]) );
if (isset($row[$j]))
{
$content .= '"'.$row[$j].'"' ;
}
else
{
$content .= '""';
}
if ($j<($fields_amount-1))
{
$content.= ',';
}
}
$content .=")";
//every after 100 command cycle [or at last line] ....p.s. but should be inserted 1 cycle eariler
if ( (($st_counter+1)%100==0 && $st_counter!=0) || $st_counter+1==$rows_num)
{
$content .= ";";
}
else
{
$content .= ",";
}
$st_counter=$st_counter+1;
}
} $content .="\n\n\n";
}
//$backup_name = $backup_name ? $backup_name : $name."___(".date('H-i-s')."_".date('d-m-Y').")__rand".rand(1,11111111).".sql";
$backup_name = $backup_name ? $backup_name : $name.".sql";
header('Content-Type: application/octet-stream');
header("Content-Transfer-Encoding: Binary");
header("Content-disposition: attachment; filename=\"".$backup_name."\"");
echo $content; exit;
}
答案 0 :(得分:0)
没关系,我自己弄清楚了。
这会添加事件和表,触发器/存储过程应该以类似的方式工作:
function Export_Database($host,$user,$pass,$name,$tables=false,$backup_name=false){
$mysqli = new mysqli($host,$user,$pass,$name);
$mysqli->select_db($name);
$mysqli->query("SET NAMES 'utf8'");
$queryTables = $mysqli->query("SHOW TABLES");
while($row = $queryTables->fetch_row()){
$target_tables[] = $row['0']; //put each table name into array
}
if($tables){
$target_tables = array_intersect($target_tables, $tables);
}
foreach($target_tables as $table){
$result = $mysqli->query('SELECT * FROM '.$table);
$fields_amount = $result->field_count;
$rows_num = $mysqli->affected_rows;
$res = $mysqli->query('SHOW CREATE TABLE '.$table);
$TableMLine = $res->fetch_row();
$content = (!isset($content) ? '' : $content) . "\n\n".$TableMLine[1].";\n\n";
for ($i = 0, $st_counter = 0; $i < $fields_amount; $i++, $st_counter=0){
while($row = $result->fetch_row()){
//when started (and every after 100 command cycle):
if ($st_counter%100 == 0 || $st_counter == 0 ){
$content .= "\nINSERT INTO ".$table." VALUES";
}
$content .= "\n(";
for($j=0; $j<$fields_amount; $j++){
$row[$j] = str_replace("\n","\\n", addslashes($row[$j]) );
if (isset($row[$j])){
$content .= '"'.$row[$j].'"' ;
} else {
$content .= '""';
}
if ($j<($fields_amount-1)){
$content.= ',';
}
}
$content .=")";
//every after 100 command cycle [or at last line] ....p.s. but should be inserted 1 cycle eariler
if ( (($st_counter+1)%100==0 && $st_counter!=0) || $st_counter+1==$rows_num){
$content .= ";";
} else {
$content .= ",";
}
$st_counter=$st_counter+1;
}
} $content .="\n\n\n";
}
$events = $mysqli->query("SHOW EVENTS");
while($events && ($row = $events->fetch_row())){
$res = $mysqli->query("SHOW CREATE EVENT ".$row[0].'.'.$row[1]);
$TableMLine = $res->fetch_row();
$content .= "\n\n".$TableMLine[3].";\n\n";
}
$backup_name = $backup_name ? $backup_name : $name.".sql";
header('Content-Type: application/octet-stream');
header("Content-Transfer-Encoding: Binary");
header("Content-disposition: attachment; filename=\"".$backup_name."\"");
echo $content; exit;
}