PHP Download complete mysql database as .sql backup file - php

Question

I looked for a way in PHP to send a mysql database as .sql File to the client as download.
I found a bunch of solutions and I really liked the approach of using mysqldump command via exec() (or shell_exec() or system()) but sadly the mysqldump command is not available to me in this case.
And since my database connection cannot be hardcoded either, I found a lot of 'reinventing the wheel' solutions, where you just query 'SHOW TABLES' and start iterating, like in here: Export MySQL database using PHP only (Raju Dudhrejiya's Answer) .
This worked perfectly fine until I noticed that it only saves the tables, and so does every other similar approach I found. No Events, Triggers, etc.. which is bad. Really bad.
I need something that also at least backs up events, so my first approach would be to just expand the following method (taken from the link above), though I am not sure how I would go on about it. I guess I must somehow query over all the events and append a 'CREATE EVENT' statement somewhere?
Has anyone done something similar?
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;
}

Answer 1

Nevermind, I figured it out myself.
This adds events and tables, triggers/ stored procedures should work in a similar fashion:
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;
}