Hi,

I wanna use Image crop function in PHP. Image source is

PHP Code:

<?php echo get_post_meta($post->ID, "Image", true); ?>

for the size width: 315px; height: 245px;

using this

PHP Code:

<?php
// Create image instances
$src = imagecreatefromgif('php.gif');
$dest = imagecreatetruecolor(80, 40);

// Copy
imagecopy($dest, $src, 0, 0, 20, 13, 80, 40);

// Output and free from memory
header('Content-Type: image/gif');
imagegif($dest);

imagedestroy($dest);
imagedestroy($src);
?>

I'm just confused with the image source here !

And the question is?

Sorry, I didn't post a proper question, then.

I want to use Image crop script using the image source as

PHP Code:

<?php echo get_post_meta($post->ID, "Image", true); ?>

I just want to know should php tags come in the following code or just without them like this:

PHP Code:

echo get_post_meta($post->ID, "Image", true); 


for the following code:

PHP Code:

<?php 
// Create image instances 
$src = imagecreatefromgif('<?php echo get_post_meta($post->ID, "Image", true); ?>'); 
$dest = imagecreatetruecolor(80, 40); 

// Copy 
imagecopy($dest, $src, 0, 0, 20, 13, 80, 40); 

// Output and free from memory 
header('Content-Type: image/gif'); 
imagegif($dest); 

imagedestroy($dest); 
imagedestroy($src); 
?>

It depends - if that line is inside <?php already, then no.

You still haven't given us much to go on, so I'm just gonna take a big guess here.

I think get_post_meta() is a function that fetches some image data, perhaps from a database, and returns the data with an image header. That is, if you just open the page that calls that function in a browser, it would actually show an image.

Now, the function imagecreatefromgif() want's an image source, a path to an image file. So you should simply give it the path to the file that calls the get_post_meta() function, as in

PHP Code:

$src = imagecreatefromgif("path/to/file.php"); 


If that doesn't work, I doubt we'll be able to help you unless you are more specific. You could for example show us some code of what the get_post_meta() function actually does, since you don't seem to know yourself.

This line:

PHP Code:

$src = imagecreatefromgif('<?php echo get_post_meta($post->ID, "Image", true); ?>');

Should just be:

PHP Code:

$src = imagecreatefromgif( get_post_meta($post->ID, "Image", true) ); 


You are passing the output of get_post_meta to the imagecreatefromgif function. You should already be in PHP mode when you call this function, and even if you weren't, putting php tags in the middle of a string would not have the desired effect.

Originally Posted by lizciz

You could for example show us some code of what the get_post_meta() function actually does, since you don't seem to know yourself.

get_post_meta is a function built into wordpress. It retrieves a meta data for a given post.

Originally Posted by NullPointer

get_post_meta is a function built into wordpress. It retrieves a meta data for a given post.

Aha, I didn't know that