PHP Get file name starting with prefix

Question

This is a custom function. At the moment, this function get all the file in the default directory, strip ".php" and list them.

The problem is that I want to only get files from the directory which has starting prefix "tpl-" Example : tpl-login-page.php

/* Get template name of the file */
        function get_template_name (){
            $files = preg_grep('~\.(php)$~', scandir(admin . "templates/default/"));
                foreach($files as $file){
                    $file = str_replace('.php','',$file);
                    echo $file . "<br/>";
                }
        }

Answer 1

You need to change the regular expression in preg_grep:

$files = preg_grep('~^tpl-.*\.php$~', scandir(admin . "templates/default/"));

Explanation:

1. ^tpl- - starting with "tpl-"

2. .* - any characters

3. \.php$ - ending with ".php"

Answer 2

I like another, simple way:

1. get all files in folder

   $path = './images'; 
   $files = glob($path.'/*');

2. get all files having extension .jpg

   $path = './images'; 
   $files = glob($path.'/*.jpg');

3. get all files having prefix myprefix_

   $path = './images'; 
   $files = glob($path.'/myprefix_*');

Answer 3

 $target_file_png = glob($target_dir.'/group_'.$groupId.'*.png'); 

$target_file_png will return an array containing all the files in folder specified in the path $target_dir starting with '/group_'.$groupId.' and specify the file format as *.png