Running python script in Laravel

问题:

So, I am trying to run a python script in my Laravel 5.3.

This function is inside my Controller. This simply passes data to my python script

public function imageSearch(Request $request) {     $queryImage = 'c:\\\xampp\\\htdocs\\\identificare_api\\\public\\\gallery\\\herbs\\\query.png'; //queryImage     $trainImage = 'c:\\\xampp\\\htdocs\\\identificare_api\\\public\\\gallery\\\herbs\\\2nd.png'; //trainImage     $trainImage1 = 'c:\\\xampp\\\htdocs\\\identificare_api\\\public\\\gallery\\\herbs\\\3rd.png';     $trainImage2 = 'c:\\\xampp\\\htdocs\\\identificare_api\\\public\\\gallery\\\herbs\\\4th.jpg';     $trainImage3 = 'c:\\\xampp\\\htdocs\\\identificare_api\\\public\\\gallery\\\herbs\\\1st.jpg';      $data = array         (             array(0, $queryImage),             array(1, $trainImage),             array(3, $trainImage1),             array(5, $trainImage2),             array(7, $trainImage3),         );      $count= count($data);     $a = 1;     $string = "";      foreach( $data as $d){         $string .= $d[0] . '-' . $d[1];          if($a < $count){             $string .= ",";          }         $a++;      }      $result = shell_exec("C:\Python27\python c:\xampp\htdocs\identificare_api\app\http\controllers\ORB\orb.py " . escapeshellarg($string));      echo $result; } 

My python script is an ORB algorithm where it returns the smallest distance and its id after comparing the train images to the query image. So, this is my python script:

import cv2 import sys import json from matplotlib import pyplot as plt  arrayString = sys.argv[1].split(",")  final = []  for i in range(len(arrayString)):     final.append(arrayString[i].split("-"))  img1 = cv2.imread(final[0][1], 0)  for i in range(1, len(arrayString)):      img2 = cv2.imread(final[i][1], 0)      # Initiate STAR detector     orb = cv2.ORB_create()      # find the keypoints and descriptors with SIFT     kp1, des1 = orb.detectAndCompute(img1,None)     kp2, des2 = orb.detectAndCompute(img2,None)      # create BFMatcher object     bf = cv2.BFMatcher(cv2.NORM_HAMMING, crossCheck=True)      # Match descriptors.     matches = bf.match(des1,des2)      # Sort them in the order of their distance.     matches = sorted(matches, key = lambda x:x.distance)      # Draw first 10 matches.     img3 = cv2.drawMatches(img1,kp1,img2,kp2,matches[:10], None, flags=2)      if i == 1:        distance = matches[0].distance     else:        if distance > matches[0].distance:            distance = matches[0].distance            smallestID = final[i][0]  print str(smallestID) + "-" + json.dumps(distance) 

I already tried running both file without using Laravel and it is working well. But when I tried to integrate the php code to my Laravel, it displays nothing. The Status code is 200 OK.

EDIT: Problem Solved. In PHP code, just change

$result = shell_exec("C:\Python27\python c:\xampp\htdocs\identificare_api\app\http\controllers\ORB\orb.py " . escapeshellarg($string)); 

to

$result = shell_exec("python " . app_path(). "\http\controllers\ORB\orb.py " . escapeshellarg($string)); 

then, you can also do like this

$queryImage = public_path() . "\gallery\herbs\query.png"; 

回答1:

Use Symfony Process. https://symfony.com/doc/current/components/process.html

Install:

composer require symfony/process 

Code:

use Symfony\Component\Process\Process; use Symfony\Component\Process\Exception\ProcessFailedException;  $process = new Process('python /path/to/your_script.py'); $process->run();  // executes after the command finishes if (!$process->isSuccessful()) {     throw new ProcessFailedException($process); }  echo $process->getOutput(); 

文章来源: Running python script in Laravel