尝试使用PHP在签名图像上呈现头像图像

I am making a dynamic signature generator and I would like to add a avatar image in part of the signature. How would I do this as well as sizing down the image?

Here is an example.

I have 2 images:

1. https://s-media-cache-ak0.pinimg.com/736x/d1/2e/9e/d12e9ecd9f4c4e45dafa5880c7d99c73.jpg
2. http://cf.juggle-images.com/matte/white/280x280/php-1-logo-primary.jpg

Steps:

1. Set the content type header - in this case image/jpg
2. Create new canvas, width: 720, height: 637
3. Create two new images from file or URL, $icon1 & $icon2
4. Copy part of $icon1 to $canvas
5. Copy and resize part of $icon2 to $can
6. Output image to browser

<?php
header('Content-Type: image/jpg');
$canvas = imagecreatetruecolor(720,  637);
$icon1 = imagecreatefromjpeg('https://s-media-cache-ak0.pinimg.com/736x/d1/2e/9e/d12e9ecd9f4c4e45dafa5880c7d99c73.jpg');
$icon2 = imagecreatefromjpeg('http://cf.juggle-images.com/matte/white/280x280/php-1-logo-primary.jpg');

//add 2 source images
imagecopy($canvas, $icon1, 0, 0, 0, 0, 720,  637);
imagecopyresized($canvas, $icon2, 0, 0, 0, 0, 100, 100, 280, 280);

//Output image to browser
imagejpeg($canvas);
?>

You can do that by copying one image on the other, with some resampling (to make the avatar smaller, if desired.).

PHP must have GD libs included, if not, make sure you have support for GD, otherwise you cannot use the functions.

Check your GD support: function.gd-info.php

Then start reading here:

function.imagecopy.php

or here: function.imagecopyresampled.php