Several common ways to obtain file extensions in PHP_php tips

The examples in this article describe several common methods for obtaining file extensions in PHP. Share it with everyone for your reference. The details are as follows:

Method 1:

function get_file_type($filename){
  $type = substr($filename, strrpos($filename, ".")+1);
  return $type;
}

Method 2:

function get_file_type($filename)
{
   $type = pathinfo($filename);
   $type = strtolower($type["extension"]);
   return $type;
}

Method 3:

function get_file_type($filename)
{  
   $type =explode("." , $filename);
   $count=count($type)-1;
   return $type[$count];
}

I hope this article will be helpful to everyone’s PHP programming design.