What is the Image Manipulation library in CodeIgniter 4?
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This question targets practical, hands-on experience with CodeIgniter. Interviewers want to see if you've worked with these concepts in real projects, not just read about them. Strong answers include concrete examples.
Answer
CI4 provides an Image class for common image manipulation tasks. Load an image: $image = Services::image()->withFile("/path/to/image.jpg"). Resize: $image->resize(200, 200, true)->save("/path/to/thumb.jpg") (third parameter: maintain aspect ratio). Crop: $image->crop(100, 100, 10, 10) (width, height, x, y). Rotate: $image->rotate(90). Flip: $image->flip("horizontal"). Convert: $image->convert(IMAGETYPE_WEBP). Watermark text: $image->text("© My App", ["color" => "#fff", "opacity" => 50, "withShadow" => true]). Fit (crop to fit): $image->fit(200, 200, "center"). CI4 supports GD2, ImageMagick, and Netpbm drivers — configure in app/Config/Images.php. Chain operations: $image->resize(800, 600, true)->watermarkText("©")->save().
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