Phalcon Images

by Online Tutorials Library July 14, 2022

Phalcon Image

This component allows developers to manipulate image files. We can perform multiple operation on a single image file.

Adapters

Adapter are used to encapsulate specific image manipulator programs. The following image manipulator programs are supported:

Class	Description
PhalconImageAdapterGd	Requires the GD PHP extension
PhalconImageAdapterImagick	Requires the ImageMagick PHP extension

Implementation

  <?php  use PhalconImageFactory;  $options = [      ‘width’   => 200,      ‘height’  => 200,      ‘file’    => ‘upload/tutoraspire.jpg’,      ‘adapter’ => ‘imagick’,  ];  $image = Factory::load($options);  ?>  

Output:

Phalcon Images 1

Resizing Image

We can resize image with proper ratio maintenance by using different methods.

PhalconImage::WIDTH

It is used to change the width of the image but keeps the ratio maintains. If we specify height then it is ignored.

  <?php  $image = new PhalconImageAdapterGd(‘image.jpg’);  $image->resize(    300,    null,    PhalconImage::WIDTH  );  $image->save(‘resized-image.jpg’);  ?>  

Output:

Phalcon Images 2

PhalconImage::HEIGHT

It is used to change the height of the image but keeps the ratio maintains. If we specify width then it is ignored.

  <?php  $image = new PhalconImageAdapterGd(‘image.jpg’);  $image->resize(      null,      300,      PhalconImage::HEIGHT  );  $image->save(‘resized-image.jpg’);  ?>  

Output:

Phalcon Images 3

Cropping Image

It is used to crop the image by 200px*200px.

  <?php  $image = new PhalconImageAdapterGd(‘image.jpg’);  $width =200;  $height = 200;  $offsetX = (($image->getWidth() – $width) / 2);  $offsetY = (($image->getHeight() – $height) / 2);  $image->crop($width, $height, $offsetX, $offsetY);  $image->save(‘cropped-image.jpg’);  ?>  

Output:

Phalcon Images 4

Rotating Image

It is used to rotate throughout 360 degree as per requirement.

  <?php  $image = new PhalconImageAdapterGd(‘image.jpg’);  // Rotate an image by 90 degrees clockwise  $image->rotate(90);  $image->save(‘rotated-image.jpg’);  ?>  

Output:

Phalcon Images 5

Sharpening Image

The sharpen() method takes integer value between 0 (no effect) to 100 (very sharp).

  <?php  $image = new PhalconImageAdapterGd(‘image.jpg’);  $image->sharpen(50);  $image->save(‘sharpened-image.jpg’);  ?>  

Output:

Phalcon Images 6

Blurring Image

  <?php  $image = new PhalconImageAdapterGd(‘image.jpg’);  $image->blur(50);  $image->save(‘blurred-image.jpg’);  ?>  

Output:

Phalcon Images 7

Next TopicPhalcon View

Phalcon Images

Phalcon Image

Adapters

Implementation

Resizing Image

Cropping Image

Rotating Image

Sharpening Image

Blurring Image

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