README

Image magick shell command wrapper for php

requirements

apt install imagemagick

Why using magick shell command from php?

Occasionally, a php-imagick (ext-imagick) is not available.

Some mod-php server are not supporting ext-imagck. but convert command is easy to install.

Imagick class ( in ext-imagick) is not documented in precisely.

Think, Can you tell how to use 'png:compression-filter' in ext-imagick ?. Perhaps you can't. But, there are very many 'convert' samples in web. and we are trying to system('convert a.jpg b.png') calling with escaping shell arguments. What's a irritated.

So, we need convert command wrapper.

Installing from GitHub

repo=git@github.com:takuya/php-imagick-cmd-wrapper.git
composer config repositories.takuya/php-imagick-cmd-wrapper vcs $repo
composer require takuya/php-imagick-cmd-wrapper

Usage Sample

$f_in = 'DkzpJ1lUUAA84KP.jpg';
$width = 500;
// convert
$convert = new Convert();
$ret = $convert
      ->setInputFile( $f_in )
      ->unsharp('10x5+0.7+0')
      ->sample($width)
      ->pointsize(30)
      ->fill('blue')
      ->strokewidth(1)
      ->stroke('gray80')
      ->font('DejaVu-Sans')
      ->annotate('+10+100','unsharp_sample')
      ->setOutputFile( 'jpeg:-' )
      ->execute();
$image_bin = $ret[1];
file_put_contents('out.jpg',$image_bin)    

Important Notice! Call Method Ordering.

Before Use, You should know that OPTIONS Ordering is VERY IMPORTANT.

The convert command is Very NAIVE for option order.

We must care about Arguments Ordering.

Sample1 ( vain , not working. )

(new Identify())
    ->setInputFile('a.jpg')
    ->format('[%w,%h]')
->execute();

This result in identify a.jpg -format '[%w,%h]' , but no work.

Sample2 ( works fine. )

(new Identify())
    ->setInputFile('a.jpg')
    ->format('[%w,%h]')
->execute();

This result in identify -format '[%w,%h]' a.jpg , it will work fine.

More Sample Usage

Convert JPEG to PNG.

$convert = ;
(new Convert())
      ->setInputile( 'a.jpg' )
      ->setOutputFile( 'b.png' )
      ->execute();

Using STDOUT - converting jpeg to png

$convert = ;
$result = (new Convert())
      ->setInputile( 'a.jpg' )
      ->setOutputFile( 'png:-' )
      ->execute();
$png_binary = $result[1];

Using STDIN - converting jpeg to png

$convert = ;
$result = (new Convert())
      ->setInputile( '-', file_get_contents('a.jpg') )
      ->setOutputFile( 'png:-' )
      ->execute();
$png_binary = $result[1];

Structure of return value

command result is array of 3 entries

$result = [
  '0' => ' int / exit status code' ,
  '1' => ' string / stdout from command' ,
  '2' => ' string / stderr from command' ,
];

Resize(sampling Algorithm) and UnSharp and Normalization

$ret = $convert
      ->setInputFile( $f_in )
      ->sample('50%')
      ->unsharp('10x5+0.7+0')
      ->normalize()
      ->setOutputFile( 'jpeg:-' )
      ->execute();

IDE Auto Completion.

Options(methods) are auto generated from Help doc from 'convert -h'.

So, in Some IDE, Auto completions will not work fine.

If it happens then add a path src/generated/ to your Project search PATH.

Developing notice.

This project uses auto generated php code, parsing converet -h.

If you want to re-generate class, execute these command in CLI.

composer run generate-class convert
composer run generate-class montage
composer run generate-class identify
composer run generate-class mogrify

I used these environment. wsl1 debian.

wsl --list -v
  NAME      STATE           VERSION
* Debian    Running         1

cat /etc/debian_version
10.10

imagemagick from debian(wsl)

convert -version
Version: ImageMagick 6.9.10-23 Q16 x86_64 20190101 https://imagemagick.org
Copyright: © 1999-2019 ImageMagick Studio LLC
License: https://imagemagick.org/script/license.php
Features: Cipher DPC Modules OpenMP
Delegates (built-in): bzlib djvu fftw fontconfig freetype heic jbig jng jp2 jpeg lcms lqr ltdl lzma openexr pangocairo png tiff webp wmf x xml zlib

test results.

testing

composer install 
./vendor/bin/phpunit