Create Javascript array using PHP

$js_image_array = 'start script type=text/javascript \n var Aimage = new Array() \n var Aimage_descr = new Array();\n';

for( $i = 0; $i < count($L_ResultGraphics) ; $i++){
.$L_ResultGraphics[0]->file_name."=>".$L_ResultGraphics[0]->description."',";
$js_image_array = $js_image_array . "Aimage[$i] ='".$L_ResultGraphics[$i]->file_name."';\n";
$js_image_array = $js_image_array . "Aimage_descr[$i] ='".$L_ResultGraphics[$i]->description."';\n";
}
$js_image_array = $js_image_array . "\n script end";

print $js_image_array;