problemas com imagem dinamica

<?php
 

$hostName = "localhost";

header("Content-type: image/png");

/ CHANGE THESE LINES BELOW TO YOUR DETAILS /

$userName = "";

$password = "";

$dbName = "";

/ make connection to database /

mysql_connect($hostName, $userName, $password) or die("Unable to connect to host $hostName");

mysql_select_db($dbName) or die("Unable to select database $dbName");

 

$sql = "SELECT lat, lon, alt, gs, IATA, phase FROM positions WHERE last_update > DATE_SUB( NOW() , INTERVAL 15 MINUTE )";

$result = mysql_query( $sql );

$phase = ' phase ';

/ mysql error /

if (!$result) {

	mysql_close();

	die("Error - Database Connection.");

}

if (mysql_result($result) == 0) {

($im = ImageCreateFromPng("off.png"));

} elseif ($phase = 1) {

	$im = (mysql_result($result,"phase") == 1 );

 $im = ImageCreateFromPng("embarque.png");

 // Boarding

} elseif ($phase = 2) {

	$im = (mysql_result($result,"phase") == 2 );

 $im = ImageCreateFromPng("taxidosgates.png");

 // Taxi From Gate

} elseif ($phase = 3) {

	$im = (mysql_result($result,"phase") == 3 );

 $im = ImageCreateFromPng("decolando.png");

 // Departing

} elseif ($phase = 4) {

	$im = (mysql_result($result,"phase") == 4 );

 $im = ImageCreateFromPng("subida.png");

 // Climbing

} elseif (mysql_result($result,"phase") == 5 ) {

	$im = (mysql_result($result,"phase") == 5 );

 $im = ImageCreateFromPng("cruzeiro.png");

 // Cruising

} elseif ($phase = 6) {

	$im = (mysql_result($result,"phase") == 6 );

 $im = ImageCreateFromPng("descida.png");

 // Descending

} elseif ($phase = 7) {

	$im = (mysql_result($result,"phase") == 7 );

 $im = ImageCreateFromPng("landed.png");

 // Landed

} elseif ($phase = 8) {

	$im = (mysql_result($result,"phase") == 8 );

 $im = ImageCreateFromPng("taxiparagates.png");

 // Taxi To Gate

} elseif ($phase = 9) {

	$im = (mysql_result($result,"phase") == 9 );

 $im = ImageCreateFromPng("chegadagate.png");

 // Arrived at Gate

} else {

	$im = (mysql_result($result,"phase") == 0 );

 $im = ImageCreateFromPng("off.png");

	//montar erro aqui, tipo se nao ler os acima coloca aqui imagem: online

 

}

 

//|ImageCreateFromPng("off.png");

//header("Content-type: image/png");

//$string = "Foo";

//$im = imagecreatefrompng("images/button1.png");

//$orange = imagecolorallocate($im, 220, 210, 60);

//$px = (imagesx($im) - 7.5 * strlen($string)) / 2;

//imagestring($im, 3, $px, 9, $string, $orange);

//

imagepng($im);

//

imagedestroy($im);

//

?>

estou com esse codigo mas só aprece a imagem OFF mesmo quando o PHASE no BD ta 1 ou 2 etc...