How to change export to mysql to file in php? - php

Question

Now i have such method:
function exportFromTransbase($table_name) {
$odbc_query = "SELECT * FROM " . $table_name;
$data = odbc_exec($this->odbc_id, $odbc_query);
odbc_longreadlen($data, 10485760);
while($row = odbc_fetch_array($data))
{
foreach($row as $key => $value) {
$keys[] = "`" . $key . "`";
$values[] = "'" . mysql_real_escape_string($value) . "'";
}
$mysql_query = "INSERT INTO `" . strtolower(substr($table_name, 4)) . "` (" . implode(",", $keys) . ") VALUES (" . implode(",", $values) . ")";
mysql_query($mysql_query);
set_time_limit(3600);
unset($keys);
unset($values);
unset($row);
}
if ($mysql_query){
print "Ýêñïîðò äàííûõ èç òàáëèöû " . $table_name . " çàâåðøåí!";
//strtolower(substr($table_name, 4))
}
}
But it's very slow when importing to mysql. I decide to change this to export to file .sql, so that in future i can via terminal or phpmyadmin import that table. How to change to export to sql file my data?
Note! i'm converting from transbase to mysql

Answer 1

Instead of...
while($row = odbc_fetch_array($data))
{
foreach($row as $key => $value) {
$keys[] = "`" . $key . "`";
$values[] = "'" . mysql_real_escape_string($value) . "'";
}
$mysql_query = "INSERT INTO `" . strtolower(substr($table_name, 4)) . "` (" . implode(",", $keys) . ") VALUES (" . implode(",", $values) . ")";
mysql_query($mysql_query);
set_time_limit(3600); // this should not be here
unset($keys); // this is redundant
unset($values); // and this
unset($row); // and this too
}
Try:
$oufile=fopen("export.sql", 'w') || die("error writing file");
while($row = odbc_fetch_array($data))
{
foreach($row as $key => $value) {
$keys[] = "`" . $key . "`";
$values[] = "'" . mysql_real_escape_string($value) . "'";
}
$mysql_query = "INSERT INTO `" . strtolower(substr($table_name, 4)) . "` (" . implode(",", $keys) . ") VALUES (" . implode(",", $values) . ")";
fputs($outfile, $mysql_query . ";\n";
}
However it'll be much faster if you....
$oufile=fopen("export.sql", 'w') || die("error writing file");
fputs($outfile, "ALTER TABLE `" . . strtolower(substr($table_name, 4)) . "` DISABLE KEYS;\n";
while($row = odbc_fetch_array($data))
{
foreach($row as $key => $value) {
$keys[] = "`" . $key . "`";
$values[] = "'" . mysql_real_escape_string($value) . "'";
}
$head="INSERT DELAYED INTO `" . strtolower(substr($table_name, 4)) . "` (" . implode(",", $keys) . ") VALUES ";
$row[]="(" . implode(",", $values) . ")";
if (count($row)>100) {
flush_ins($outfile, $head, $row);
$row=array();
}
}
if (count($row)) flush_ins($outfile, $head, $row);
fputs($outfile, "ALTER TABLE `" . . strtolower(substr($table_name, 4)) . "` ENABLE KEYS;\n";
fclose($outfile);
...
function flush($rows, $head, $fh)
{
fputs($fh, $head . implode("\n,", $rows) . ";\n");
}

Answer 2

see this post:
Easy way to export a SQL table without access to the server or phpMyADMIN
it uses the select into outfile syntax. The docs for this syntax are here: http://dev.mysql.com/doc/refman/5.1/en/select-into.html
you would do something like this:
mysql_query('SELECT * INTO OUTFILE "/path/to/my_file/my_file.sql" from '.$table_name)
Then this .sql file will be on your server.
If you don't have permissions to run the select into outfile synatx. You can use the mysqldump utility, like this:
<?php
exec('mysqldump db_name '.$table_name.' > my_file.sql');
?>
This will create an .sql file with the name indicated.