help recode from color to black and white

badzv

hi guys...could someone help me try to recode my php code below from generating just a black and white image. the code below takes time to process cause its trying to generate as much colors as it could receive from its source, but the thing is, the source is just passing black and white colors...

thanks in advance!

<?php

//error_reporting(0);

$w = (int)$_POST['width'];
$h = (int)$_POST['height'];
$fname = $_POST['file'];

$img = imagecreatetruecolor($w, $h);

imagefill($img, 0, 0, 0xFFFFFF);

$rows = 0;
$cols = 0;

for($rows = 0; $rows < $h; $rows++){

$c_row = explode(",", $_POST['px' . $rows]);
for($cols = 0; $cols < $w; $cols++){

	$value = $c_row[$cols];

	if($value != ""){

		$hex = $value;
		while(strlen($hex) < 6){
			$hex = "0" . $hex;
		}

		$r = hexdec(substr($hex, 0, 2));
		$g = hexdec(substr($hex, 2, 2));
		$b = hexdec(substr($hex, 4, 2));

		$test = imagecolorallocate($img, $r, $g, $b);

		imagesetpixel($img, $cols, $rows, $test);
	}
}
}


$fileName = $fname.".jpg";
$data = imagejpeg($img, $fileName, 95); 

?>

badzv

HELP PLEASE!!!!!!!!!!

Weedpacket

What after only three hours? Let me finish my coffee, why don't you?

Try searching the forums for terms like "color", "black" "white" or (if you want to sound really technical), "grayscale".

And feel free to yell at us again for being slow. We're all here with nothing else to do except wait for your post.

badzv

hi guys...im not really much of a coder, but if someone could tweak my code and make it generate a black and white image rather than trying to generate a color image coming from a variable that are only passing black and white paramets, i would certainly be grateful to you...please please please, i really need someone who could help me recode my php code...thanks a bunch, in advance!

@ : yes sir, i already did that, but the only things I found are kinda far out for me already to integrate or change it to my existing code...i just really want my php code up there to generate a black and white image rather than trying to generate a colored image but still the parameters or variables that are being passed are only black and white.