Read the content of directory in php

Question

please i am beginner in php and i want to read images in a folder I have pictures with names like:

image_1_0_0_0.png
image_1_1_0_0.png
image_1_1_1_0.png
.........
.....
image_2_0_0_0.png
image_2_1_0_0.png

image_3_0_0_0.png

I want to assign a color (imagefilter) to the images that starts with image_1 _..... and another color for image_2 _... and another color to images_3 ....

then I want to read only the last image and retrieve only the number 3, the first number left

I want to know how to do this please.

Answer 1

To read the content of a directory:

$dir = "/images/";
$color = "#000000";

// Open a directory, and read its contents
if (is_dir($dir)){
  if ($dh = opendir($dir)){
    while (($file = readdir($dh)) !== false){
      echo "Filename: ".$file."<br>";
      if($file[7]=='1') $color="#FF0000";
      elseif ($file[7]=='2') $color="#00FF00";
      elseif ($file[7]=='3') $color="#0000FF";
      else $color="#000000";
      // do something with the image
    }
    closedir($dh);
  }
}

I don't understand your last question.