PHP Inform

Thumbnails PHP function to create small images

<?PHP 

function img_resize ( $src , $dest , $width , $height , $rgb = 0xFFFFFF , $quality = 100 ) 
{ 
if (! file_exists ( $src )) return false ;

$size = getimagesize ( $src );

if ( $size === false ) return false ;

$format = strtolower ( substr ( $size [ 'mime' ], strpos ( $size [ 'mime' ], '/' )+ 1 )); 
$icfunc = "imagecreatefrom" . $format ; 
if (! function_exists ( $icfunc ))  return false ;

$x_ratio = $width / $size [ 0 ]; 
$y_ratio = $height / $size [ 1 ];

$ratio = min ( $x_ratio , $y_ratio ); 
$use_x_ratio = ( $x_ratio == $ratio );

$new_width = $use_x_ratio ? $width : floor ( $size [ 0 ] * $ratio ); 
$new_height = ! $use_x_ratio ? $height : floor ( $size [ 1 ] * $ratio ); 
$new_left = $use_x_ratio ? 0 : floor (( $width - $new_width ) / 2 ); 
$new_top = ! $use_x_ratio ? 0 : floor (( $height - $new_height ) / 2 );

$isrc = $icfunc ( $src ); 
$idest = imagecreatetruecolor ( $width , $height );

imagefill ( $idest , 0 , 0 , $rgb ); 
imagecopyresampled ( $idest , $isrc , $new_left , $new_top , 0 , 0 , 
$new_width , $new_height , $size [ 0 ], $size [ 1 ]);

imagejpeg ( $idest , $dest , $quality );

imagedestroy ( $isrc ); 
imagedestroy ( $idest );

return true ;

} 
?>