output problem

[piyush_v]

trying to make a script that interprets an image and reads the rgb values of each pixel. Ive come up with the code tht can interpret the values with help from my friends but i have no idea asto how to print it out. the format is supposed to be

Pixel R G B

 

and example line would be

 

120X200 120 230 240

the code till now is

<?php 
$source_file = "test_image.jpg";



$im = ImageCreateFromJpeg($source_file); 

$imgw = imagesx($im);
$imgh = imagesy($im);

// n = total number or pixels

$n = $imgw*$imgh;



for ($i=0; $i<$imgw; $i++)
{
for ($j=0; $j<$imgh; $j++)
{

	// get the rgb value for current pixel

	$rgb = ImageColorAt($im, $i, $j); 

	// extract each value for r, g, b

	$r = ($rgb >> 16) & 0xFF;
	$g = ($rgb >>  & 0xFF;
	$b = $rgb & 0xFF;



}
}


?>

 

any help will be appreciated

thanks

[thefortrees]

Use echo or print.

 

echo - http://us.php.net/manual/en/function.echo.php

print - http://us.php.net/manual/en/function.print.php

[leap500]

Hi

 

This should do it:

 

<?php 
$source_file    = "test_image.jpg";
$im             = ImageCreateFromJpeg($source_file); 
$imgw           = imagesx($im);
$imgh           = imagesy($im);
// n = total number or pixels
$n              = $imgw*$imgh;

for ($i=0; $i<$imgw; $i++)
{
        for ($j=0; $j<$imgh; $j++)
        {
            // get the rgb value for current pixel	
            $rgb = ImageColorAt($im, $i, $j);		
            // extract each value for r, g, b		
            $r = ($rgb >> 16) & 0xFF;
            $g = ($rgb >>  & 0xFF;
            $b = $rgb & 0xFF;

            echo $i . "x" . $j . " " . $r . " "  . $g . " " . $b . "<br />";	
        }
}
?>