How can PHP be used to automate the process of creating thumbnails for multiple images in a folder?

To automate the process of creating thumbnails for multiple images in a folder using PHP, you can use the GD library to resize and save the thumbnails. You can iterate through the images in the folder using functions like scandir() or glob(), then use GD functions like imagecreatefromjpeg() and imagecopyresampled() to create the thumbnails. 

<?php
// Path to the folder containing images
$folderPath = 'path/to/images/folder/';

// Get all files in the folder
$files = scandir($folderPath);

// Loop through each file
foreach($files as $file){
    if(in_array(pathinfo($file, PATHINFO_EXTENSION), array('jpg', 'jpeg', 'png', 'gif'))){
        // Load the image
        $image = imagecreatefromjpeg($folderPath . $file);

        // Create a thumbnail with a width of 100 pixels
        $thumb = imagecreatetruecolor(100, 100);
        imagecopyresampled($thumb, $image, 0, 0, 0, 0, 100, 100, imagesx($image), imagesy($image));

        // Save the thumbnail
        imagejpeg($thumb, $folderPath . 'thumbs/' . $file, 80);

        // Free up memory
        imagedestroy($image);
        imagedestroy($thumb);
    }
}
?>

Keywords

PHP image processing thumbnails automation folder scanning

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