Image Resize

[perezf]

Hey everyone,

How can i resize every image in a directory.

What im going to do is have a cron job that runs my file.

The file will resize every image in a given directory to the width 100px x 100px

The reason im doing this is because i dont have control of the images that are uploaded via ftp

can anyone help me?

[MadTechie]

Try this, untested but should be ok, your need to mod it for PNG & GIF, as i pulled the CreateThumb function from an old project and tweeked it a little

 

<?php
$FTP_upload = dirname(__FILE__)."/FTP/";//From Dir
$WWW_Images = dirname(__FILE__)."/images/"; //To Dir

if(!$dh = @opendir($FTP_upload)) return;
while (false !== ($obj = readdir($dh)))
{
        if($obj=='.' || $obj=='..') continue;
        CreateThumb($FTP_upload.'/'.$obj, $WWW_Images.'/'.$obj,100,100)
}
}
closedir($dh);

function CreateThumb($name,$filename,$new_w,$new_h, $Qty=100)
{
ini_set("memory_limit","32M");
if (preg_match('/(?:\.jpg|\.jpeg)$/i', $name)) {
	$src_img=imagecreatefromjpeg($name);
}

if( $src_img === false || $src_img === NULL)
{
	echo "Failed:<br>";
	return false;
}

$old_x=imageSX($src_img);
$old_y=imageSY($src_img);

//dont resize up.
if( ($new_w > $old_x) && ($new_h > $old_y))
{
	$thumb_w=$old_x;
	$thumb_h=$old_y;
}else{
	if ($old_x > $old_y) {
		$thumb_w=$new_w;
		$thumb_h=$old_y*($new_h/$old_x);
	}
	if ($old_x < $old_y) {
		$thumb_w=$old_x*($new_w/$old_y);
		$thumb_h=$new_h;
	}
	if ($old_x == $old_y) {
		$thumb_w=$new_w;
		$thumb_h=$new_h;
	}	
}

$dst_img=imagecreatetruecolor($thumb_w,$thumb_h);
imagecopyresampled($dst_img,$src_img,0,0,0,0,$thumb_w,$thumb_h,$old_x,$old_y); 

imagejpeg($dst_img,$filename, $Qty); 

imagedestroy($dst_img); 
imagedestroy($src_img); 
}
?>