Memory error

[rofl90]

I'm trying to read a file and have it open for editing, when I save it changed it to what I specify in the form heres both codes, one for the functions, one for the form, and the error:

 

<br />

<b>Fatal error</b>:  Allowed memory size of 20971520 bytes exhausted (tried to allocate 1000000000 bytes) in <b>/home/fhlinux160/p/prowebdesigns.co.uk/user/htdocs/backend/classes/database.php</b> on line <b>112</b><br />

 

functions:

 

(read is at the bottom):

<?php
/**
* $db core
*/

class database {

private $server;
private $username;
private $password;
private $database;

/**
 * __Construct()
 */
function __construct() {

}

/**
 * Connecting configuration
 */

public function connect($server, $username, $password, $database) {
	if ($server == NULL || $username == NULL || $database == NULL) {
		//TODO: error.
	} else {
		$this->server = $server;
		$this->username = $username;
		$this->password = $password;
		$this->database = $database;
		$this->database_connect ();
	}
}

/**
 * Emulating mysql_error()
 */

public function error($text) {
	echo "There has been an error.  Please try again later. <br /><br /> " . $text;
	exit ();
}

/**
 * Emulating mysql_connect()
 */

private function database_connect() {
	$conn = @mysql_connect ( $this->server, $this->username, $this->password );
	if ($conn == false) {
		$this->error ( mysql_error () );
	} else {
		$this->select_db ();
	}
}

/**
 * Emulating mysql_select_db()
 */

private function select_db() {
	$select_db = @mysql_select_db ( $this->database );
	if ($select_db == false) {
		$this->error ( mysql_error () );
	}
}

/**
 * Emulating mysql_query()
 */

public function query($query_text) {
	$query = mysql_query ( $query_text ) or die ( mysql_error () );
	return $query;
}

/**
 * Emulating mysql_fetch_array()
 */

public function fetch_array($query_object) {
	$fetch = mysql_fetch_array ( $query_object );
	return $fetch;
}

/**
 * Emulating mysql_num_rows()
 */

public function num_rows($query_object) {
	$num = mysql_num_rows ( $query_object );
	return $num;
}

/**
 * __Destruct()
 */
function __destruct() {
	unset ( $this->server );
	unset ( $this->username );
	unset ( $this->password );
	unset ( $this->database );
	mysql_close ();
}

/**
 * read_file()
 */
public function read_file($myFile, $mode) {
	$fp = fopen($myFile, $mode);
	$theData = fread($fp, 7000);
	fclose($fp);
	return $theData;
}

/**
 * write_file()
 */
public function write_file($myFile, $mode, $data2write) {
	$fp = fopen($myFile, $mode);
	$theData = fwrite($fp, $data2write);
	fclose($fp);
	return '1';
}
}

/**
 * Create $db if not existing already
 */
if (! isset ( $db )) {
$db = new database ( );
}

?>

 

form:

<form name="changecss" action="" method="get">
<fieldset><legend>CSS File</legend>
<select name="cssname" id="cssname">
<option value="frontend">Frontend CSS</option>
<option value="backend" <?php if($_GET['cssname'] == "backend") { echo "selected=\"selected\""; }?>>Backend CSS</option>
</select> 
<input type="submit" name="Submit" value="Change" />
</fieldset>
</form>

<form name="editcss" action="?a=save" method="post">
<fieldset><legend>File Name</legend>
<input type="text" name="name_css" id="name_css" value="<?php if($_GET['cssname'] == "backend") { echo "Backend CSS"; } else { echo "Frontend CSS"; } ?>" />
</fieldset>
<fieldset><legend>CSS Body</legend>
<textarea rows="25" name="css_body" id="css_body"><?php if($_GET['cssname'] == "backend") { echo $db->read_file("css/style.css", "r+"); } elseif($_GET['cssname'] == "frontend") { echo $db->read_file("../css/style.css", "r+"); } else { echo $db->read_file("css/style.css", "r+"); } ?></textarea>
</fieldset>
<fieldset><legend>Edit CSS</legend>
<input type="submit" name="submit" id="name_css" value="Edit CSS" />
</fieldset>
</form>