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PHP: Make file name original by adding an underscore and a number

Using PHP, how can I automatically make a file name original by adding an underscore and a number to the end?

If you run the script 12 times, the files saved should be named:
hello.txt
hello_1.txt
hello_2.txt
hello_3.txt
hello_4.txt
hello_5.txt
hello_6.txt
hello_7.txt
hello_8.txt
hello_9.txt
hello_10.txt
hello_11.txt



<?php

file_put_contents('hello.txt','hello');

function original_name ($str){
 while(file_exists($str)) {
  // Add underscore and number after name before extention
 }
 return $str;
}

?>
0
hankknight
Asked:
hankknight
1 Solution
 
Ray PaseurCommented:
Explode the basename using '.' as the separator.  You will get an array with the name in position zero and the extension in position one.

Increment your counter.

Implode the array using underscore, your counter, and the '.' as the glue.
0
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