Loading .sql files from within PHP

Question

I'm creating an installation script for an application that I'm developing and need to create databases dynamically from within PHP. I've got it to create the database but now I need to load in several .sql files. I had planned to open the file and mysql_query it a line at a time - until I looked at the schema files and realised they aren't just one query per line.

So, how do I load an sql file from within PHP (as phpMyAdmin does with its import command)?

Answer 1

An updated solution of Plahcinski solution. Alternatively you can use fopen and fread for bigger files:

$fp = file('database.sql', FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
$query = '';
foreach ($fp as $line) {
    if ($line != '' && strpos($line, '--') === false) {
        $query .= $line;
        if (substr($query, -1) == ';') {
            mysql_query($query);
            $query = '';
        }
    }
}

Answer 2

The easiest and fastest way to load & parse phpmyadmin dump or mysql dump file..

$ mysql -u username -p -h localhost dbname < dumpfile.sql 

Answer 3

I noticed that the PostgreSQL PDO driver does not allow you to run scripts separated by semicolons. In order to run a .sql file on any database using PDO it is necessary to split the statements in PHP code yourself. Here is a solution that seems to work quite well:

https://github.com/diontruter/migrate/blob/master/src/Diontruter/Migrate/SqlScriptParser.php

The referenced class has done the trick for me in a database independent way, please message me if there are any issues. Here is how you could use the script after adding it to your project:

$pdo = new PDO($connectionString, $userName, $password);
$pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$parser = new SqlScriptParser();
$sqlStatements = $parser->parse($fileName);
foreach ($sqlStatements as $statement) {
    $distilled = $parser->removeComments($statement);
    if (!empty($distilled)) {
        $statement = $pdo->prepare($sql);
        $affectedRows = $statement->execute();
    }
}

Answer 4

Works on Navicat dumps. Might need to dump the first /* */ comment navicat puts in.

$file_content = file('myfile.sql');
$query = "";
foreach($file_content as $sql_line){
  if(trim($sql_line) != "" && strpos($sql_line, "--") === false){
    $query .= $sql_line;
    if (substr(rtrim($query), -1) == ';'){
      echo $query;
      $result = mysql_query($query)or die(mysql_error());
      $query = "";
    }
  }
 }

Answer 5

Try This:

// SQL File
$SQLFile = 'YourSQLFile.sql';

// Server Name
$hostname = 'localhost';

// User Name
$db_user = 'root';

// User Password
$db_password = '';

// DBName
$database_name = 'YourDBName';

// Connect MySQL
$link = mysql_connect($hostname, $db_user, $db_password);

if (!$link) {
die("MySQL Connection error");
}

// Select MySQL DB
mysql_select_db($database_name, $link) or die("Wrong MySQL Database");

// Function For Run Multiple Query From .SQL File
function MultiQuery($sqlfile, $sqldelimiter = ';') {
set_time_limit(0);

if (is_file($sqlfile) === true) {
$sqlfile = fopen($sqlfile, 'r');

if (is_resource($sqlfile) === true) {
$query = array();
echo "<table cellspacing='3' cellpadding='3' border='0'>";

while (feof($sqlfile) === false) {
$query[] = fgets($sqlfile);

if (preg_match('~' . preg_quote($sqldelimiter, '~') . '\s*$~iS', end($query)) === 1) {
$query = trim(implode('', $query));

if (mysql_query($query) === false) {
echo '<tr><td>ERROR:</td><td> ' . $query . '</td></tr>';
} else {
echo '<tr><td>SUCCESS:</td><td>' . $query . '</td></tr>';
}

while (ob_get_level() &gt; 0) {
ob_end_flush();
}

flush();
}

if (is_string($query) === true) {
$query = array();
}
}
echo "</table>";

return fclose($sqlfile);
}
}

return false;
}

/* * * Use Function Like This: ** */

MultiQuery($SQLFile);

Answer 6

Just to restate the problem for everyone:

PHP's mysql_query, automatically end-delimits each SQL commands, and additionally is very vague about doing so in its manual. Everything beyond one command will yield an error.

On the other mysql_query is fine with a string containing SQL-style comments, \n, \r..

The limitation of mysql_query reveals itself in that the SQL parser reports the problem to be directly at the next command e.g.

 You have an error in your SQL syntax; check the manual that corresponds to your
 MySQL server version for the right syntax to use near 'INSERT INTO `outputdb:`
 (`intid`, `entry_id`, `definition`) VALUES...

Here is a quick solution: (assuming well formatted SQL;

$sqlCmds = preg_split("/[\n|\t]*;[\n|\t]*[\n|\r]$/", $sqlDump);