Setting a hard limit for image size using PHP

I have this开发者_如何学Python script for displaying a slideshow for a client.

I'm looking for a quick way of making the "img" not go over a certain size.

This is my original code:

<script type="text/javascript">
$(function() {
$('#test2').crossSlide({
  speed: 15,
  fade: 1
}, [
<?php
$directory = "photos/";
$images = glob("" . $directory . "*.jpg");
$arrLength = count($images);
foreach($images as $key=>$image){
echo("{src: '$image', dir: '$quotes[$random]'}");
if($key < $arrLength - 1){  echo ", "; }
}
?>
]);
});
</script>

Prehaps I could use some sort of external file?

Link it like.. image.php?img=foo.jpg (with the max script in there?)

Any help would be great,

Thanks!

getimagesize() is a start.

if( array_product(getimagesize($image)) < 2500 ) { // Check area
  // do stuff
}

list($width, $height) = getimagesize($image);
if( $width < 500 && $height < 400 ) { // Check dimensions
    // do stuff
}

In the future, do a quick Google. PHP is a language that supports a lot out of the box. Often times, you'll be able to find something in the docs.

Provided that images are uploaded to the website, you should not allow images to be uploaded that are over a certain size of megabytes.

If you're talking about dimensions, you can use the max-width: and max-height CSS attributes to make sure images don't go over a certain size.

If you're looking to scale images (or anything else) proportionately, to fit the size of their container, you can use the JQuery image resize plugin for that.