How can PHP be used to automatically generate thumbnails for images in a gallery?

To automatically generate thumbnails for images in a gallery using PHP, you can use the GD library to create a smaller version of each image. This can be achieved by resizing the original image while maintaining its aspect ratio. The thumbnails can then be displayed alongside the original images in the gallery. 

<?php
// Path to the directory containing the original images
$original_dir = 'path/to/original/images/';

// Path to the directory where thumbnails will be saved
$thumbnail_dir = 'path/to/thumbnail/images/';

// Get a list of all image files in the original directory
$files = glob($original_dir . '*.{jpg,jpeg,png,gif}', GLOB_BRACE);

// Loop through each image file and create a thumbnail
foreach ($files as $file) {
    $image = imagecreatefromstring(file_get_contents($file));
    $thumbnail = imagescale($image, 100); // Resize image to 100px width (adjust as needed)
    
    // Save the thumbnail to the thumbnail directory
    $thumbnail_filename = $thumbnail_dir . basename($file);
    imagejpeg($thumbnail, $thumbnail_filename);
    
    imagedestroy($image);
    imagedestroy($thumbnail);
}
?>

Keywords

PHP image processing thumbnails gallery automation

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