PHP check file extension

Php

Php Problem Overview

I have an upload script that I need to check the file extension, then run separate functions based on that file extension. Does anybody know what code I should use?

if (FILE EXTENSION == ???)
{
FUNCTION1
}
else if
{
FUNCTION2
}

Php Solutions

Solution 1 - Php

pathinfo is what you're looking for

PHP.net

$file_parts = pathinfo($filename);

switch($file_parts['extension'])
{
    case "jpg":
    break;

    case "exe":
    break;

    case "": // Handle file extension for files ending in '.'
    case NULL: // Handle no file extension
    break;
}

Solution 2 - Php

$info = pathinfo($pathtofile);
if ($info["extension"] == "jpg") { .... }

Solution 3 - Php

For php 5.3+ you can use the SplFileInfo() class

$spl = new SplFileInfo($filename); 
print_r($spl->getExtension()); //gives extension

Also since you are checking extension for file uploads, I highly recommend using the mime type instead..

For php 5.3+ use the finfo class

$finfo = new finfo(FILEINFO_MIME);
print_r($finfo->buffer(file_get_contents($file name));

Solution 4 - Php

$file_parts = pathinfo($filename);

$file_parts['extension'];
$cool_extensions = Array('jpg','png');

if (in_array($file_parts['extension'], $cool_extensions)){
    FUNCTION1
} else {
    FUNCTION2
}

Solution 5 - Php

$path = 'image.jpg';
echo substr(strrchr($path, "."), 1); //jpg

Solution 6 - Php

  $original_str="this . is . to . find";
  echo "<br/> Position: ". $pos=strrpos($original_str, ".");
  $len=strlen($original_str);
  if($pos >= 0)
  {
	echo "<br/> Extension: ".   substr($original_str,$pos+1,$len-$pos) ;
   }

Solution 7 - Php

$file = $_FILES["file"] ["tmp_name"]; 
$check_ext = strtolower(pathinfo($file,PATHINFO_EXTENSION));
if ($check_ext == "fileext") {
    //code
}
else { 
    //code
}
Categories
Recommended Php Solutions

Previous Solution:

Training data for sentiment analysis

NlpMachine LearningText AnalysisSentiment AnalysisTraining Data

Next Solution:

How to create a self resizing grid of buttons in tkinter?

PythonButtonGridTkinterAutoresize

Attributions

All content for this solution is sourced from the original question on Stackoverflow.

The content on this page is licensed under the Attribution-ShareAlike 4.0 International (CC BY-SA 4.0) license.

Content TypeOriginal AuthorOriginal Content on Stackoverflow
Questionuser547794View Question on Stackoverflow
Solution 1 - PhpBrombombView Answer on Stackoverflow
Solution 2 - PhpAlon EitanView Answer on Stackoverflow
Solution 3 - PhpRotimiView Answer on Stackoverflow
Solution 4 - PhpimaginabitView Answer on Stackoverflow
Solution 5 - PhpAiryView Answer on Stackoverflow
Solution 6 - PhpJasmeenView Answer on Stackoverflow
Solution 7 - PhpGeniusGeekView Answer on Stackoverflow