php-darknet 
php-ffi experiment
php7.4 interface to the lib-darknet for object detection.
Install
composer require ghostjat/darknet
Description
lib-darknet 
Darknet
Darknet is an open source neural network framework written in C and CUDA. It is fast, easy to install, and supports CPU and GPU computation.
- 
It offers a simple API.
- 
High performance, due to the fact that it uses native interface elements.
- 
Fast learning by the user, due to the simplicity of its API.
# yolo v2, v3, v4 #
If running on cpu you may use FASTEST cfg & weight for real time object detection on MS COCO dataset.
require '../vendor/autoload.php';
use darknet\core;
$dn = new core(core::YOLOFASTEST);
System-Conf:- 
CPU:- Intel(R) Core(TM) i3-2370M CPU @ 2.40GHz 64bit
MEM:- 8GB
Dataset:- MS-COCO Classes:- 80
|  YOLO     |   Time (ms)     |   CPU     | Mem(mb)(max)  |
|-----------|-----------------|-----------|---------------|
| Tiny-v2   | 0.85933095 (max)|   78      |     143.59    |
|           | 0.62237596 (min)|           |               |
|-----------|-----------------|-----------|---------------|
| Tiny-v3   | 0.93895602 (max)|   90      |     125.9     |
|           | 0.60306811 (min)|           |               |
|-----------|-----------------|-----------|---------------|
| Main-v3   | 15.4672219 (max)|   98      |     964.5     |
|           | 14.0677847 (min)|           |               |
|-----------|-----------------|-----------|---------------|
| Tiny-v4   | 0.85933095 (max)|   82      |     151.9     |
|           | 0.62237596 (min)|           |               |
|-----------|-----------------|-----------|---------------|
| FASTEST   | 0.20039399 (max)|   20      |     97.47     |
|           | 0.11836814 (min)|           |               |
|-----------|-----------------|-----------|---------------|
| FASTEST-xl| 0.80017591 (max)|   69      |     131.85    |
|           | 0.22637511 (min)|           |               |
Synopsis
WARNING:  
This module is in its early stages and should be considered a Work in Progress.
The interface is not final and may change in the future.  
Sample:
<p align="center">
 <img src="https://raw.github.com/ghostjat/php-darknet/master/temp/out/gp.jpg" alt="gp"/>
 <img src ="https://raw.github.com/ghostjat/php-darknet/master/temp/out/dog.jpg" alt ="dog"/>
  <img src ="https://raw.github.com/ghostjat/php-darknet/master/temp/out/eagle.jpg" alt ="egale"/>
 <img src ="https://raw.github.com/ghostjat/php-darknet/master/temp/out/giraffe.jpg" alt ="giraffe"/>
<img src="https://raw.github.com/ghostjat/php-darknet/master/temp/out/person.jpg" alt="person"/>
</p>
<img src="https://raw.github.com/ghostjat/php-darknet/master/temp/out/gp.jpg" alt="gp"/>
 <img src ="https://raw.github.com/ghostjat/php-darknet/master/temp/out/dog.jpg" alt ="dog"/>
  <img src ="https://raw.github.com/ghostjat/php-darknet/master/temp/out/eagle.jpg" alt ="egale"/>
 <img src ="https://raw.github.com/ghostjat/php-darknet/master/temp/out/giraffe.jpg" alt ="giraffe"/>
<img src="https://raw.github.com/ghostjat/php-darknet/master/temp/out/person.jpg" alt="person"/>
</p>
Sample code:
require '../vendor/autoload.php';
use darknet\core;
$lib = '/home/ghost/bin/c-lib/darknet/data/';
$img = ['eagle.jpg','giraffe.jpg','horses.jpg','person.jpg','kite.jpg'];
$dn = new core();
foreach ($img as $value) {
    $dn->detect($lib.$value);
}
Author
Shubham Chaudhary <[email protected]>