Alert: This function’s access is marked private. This means it is not intended for use by plugin or theme developers, only in other core functions. It is listed here for completeness.

wp_check_php_mysql_versions()

Check for the required PHP version, and the MySQL extension or a database drop-in.


Description

Dies if requirements are not met.


Top ↑

Source

File: wp-includes/load.php. View all references

function wp_check_php_mysql_versions() {
	global $required_php_version, $wp_version;
	$php_version = phpversion();

	if ( version_compare( $required_php_version, $php_version, '>' ) ) {
		$protocol = wp_get_server_protocol();
		header( sprintf( '%s 500 Internal Server Error', $protocol ), true, 500 );
		header( 'Content-Type: text/html; charset=utf-8' );
		printf( 'Your server is running PHP version %1$s but WordPress %2$s requires at least %3$s.', $php_version, $wp_version, $required_php_version );
		exit( 1 );
	}

	if ( ! extension_loaded( 'mysql' ) && ! extension_loaded( 'mysqli' ) && ! extension_loaded( 'mysqlnd' )
		// This runs before default constants are defined, so we can't assume WP_CONTENT_DIR is set yet.
		&& ( defined( 'WP_CONTENT_DIR' ) && ! file_exists( WP_CONTENT_DIR . '/db.php' )
			|| ! file_exists( ABSPATH . 'wp-content/db.php' ) )
	) {
		require_once ABSPATH . WPINC . '/functions.php';
		wp_load_translations_early();
		$args = array(
			'exit' => false,
			'code' => 'mysql_not_found',
		);
		wp_die(
			__( 'Your PHP installation appears to be missing the MySQL extension which is required by WordPress.' ),
			__( 'Requirements Not Met' ),
			$args
		);
		exit( 1 );
	}
}


Top ↑

Changelog

Changelog
Version Description
3.0.0 Introduced.

Top ↑

User Contributed Notes

You must log in before being able to contribute a note or feedback.