How to implement this Java code in PHP code.

public static Map
  
   
    
    loadTrainData() throws Exception {        Map
   
    
     
     map = new HashMap
    
     
      
     ();        File dir = new File("train");        File[] files = dir.listFiles();        for (File file : files) {            map.put(ImageIO.read(file), file.getName().charAt(0) + "");        }        return map;    }
    
     
   
    
  
   

In the attempt to use PHP to write captcha identification, refer to a Java code. But I don't know how to write in PHP when I encounter this.

The idea is to open the image in the directory, and then say the image as the map key, the file name to do the value.

Then I wrote the following code, but I didn't know what to do later.

    public function loadTrainData()    {        $data = array();        $path = "train/train1/";        $handler = opendir($path);          while (($filename = readdir($handler)) !== false) {              if ($filename != "." && $filename != "..") {                  $files[] = file_get_contents($path.$filename);           }          }        closedir($handler);         #code 这里应该怎么写，还是说有更好的写法去写这个函数                return $data;    }

Reply content:

public static Map
  
   
    
    loadTrainData() throws Exception {        Map
   
    
     
     map = new HashMap
    
     
      
     ();        File dir = new File("train");        File[] files = dir.listFiles();        for (File file : files) {            map.put(ImageIO.read(file), file.getName().charAt(0) + "");        }        return map;    }
    
     
   
    
  
   

In the attempt to use PHP to write captcha identification, refer to a Java code. But I don't know how to write in PHP when I encounter this.

The idea is to open the image in the directory, and then say the image as the map key, the file name to do the value.

Then I wrote the following code, but I didn't know what to do later.

    public function loadTrainData()    {        $data = array();        $path = "train/train1/";        $handler = opendir($path);          while (($filename = readdir($handler)) !== false) {              if ($filename != "." && $filename != "..") {                  $files[] = file_get_contents($path.$filename);           }          }        closedir($handler);         #code 这里应该怎么写，还是说有更好的写法去写这个函数                return $data;    }

is the train file name in your directory probably the same?A B C D ... 0 1 2 3
JavaThe code is to traverse the directory and then build one Map .

Your PHP code should look similar to this:

$files[$filename] = file_get_contents($path.$filename);

has been resolved.

public function loadTrainData()    {        $path = "train/tran1/";        $handler = opendir($path);          while (($filename = readdir($handler)) !== false) {              if ($filename != "." && $filename != "..") {                  $sampleMap[substr($filename, 0, 1)] = imagecreatefromjpeg($path.$filename);           }          }        closedir($handler);         return $sampleMap;    }

