Batch resize images with ImageMagick ( and php )

convert.php

<?php

//path to image magick
$convert = '/usr/local/bin/convert';
 
$source = __DIR__ . '/all_images';
$dest = __DIR__ . '/resize';
$quality = 95; // 1-100 ; 92 is default.
$maxSize = 3680; //in pixels


$fileList = glob("$source/*.JPG");
echo "Searching on $source\n Found " . count($fileList) . " files to convert. \n";
echo "This script will rezise images and output them in $dest.\n";
echo "Are you sure you want to do this?  Type 'yes' to continue: ";
$handle = fopen ("php://stdin","r");
$line = fgets($handle);
if(trim($line) != 'yes'){
    echo "ABORTING!\n";
    exit;
}
fclose($handle);
echo "\n";
echo "continuing...\n";

$opCount = 1;
foreach ( $fileList as $sourceFile) {
    $fileName = basename($sourceFile);
    echo "$opCount: $fileName old size " . filesize($sourceFile) . "\n";
    $cmd = "$convert $sourceFile -strip -quality $quality -resize {$maxSize}x{$maxSize} $dest/$fileName";
    `$cmd`;
    echo "$opCount: $fileName new size " . filesize("$dest/$fileName") . "\n";
    $opCount++;
}
echo "Conversion done.\n";