How can one properly set the size of a popup window to match the size of an image generated in PHP?

When generating an image in PHP and displaying it in a popup window, it's important to set the size of the window to match the dimensions of the image. This can be achieved by passing the width and height of the image to the JavaScript function that opens the popup window. By dynamically setting the width and height of the popup window based on the image dimensions, you can ensure that the window fits the image perfectly. 

<?php
// Get the width and height of the generated image
$image_width = 800; // Replace with actual width of the image
$image_height = 600; // Replace with actual height of the image

// JavaScript function to open popup window with specified size
echo "<script type='text/javascript'>
function openPopup(url) {
    var width = $image_width;
    var height = $image_height;
    var left = (screen.width - width) / 2;
    var top = (screen.height - height) / 2;
    window.open(url, '', 'width=' + width + ', height=' + height + ', top=' + top + ', left=' + left);
}
</script>";
?>

Keywords

PHP image generation popup window window size JavaScript

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