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  1. <?php
  2.  
  3. $filenames = array(
  4.     'Vacation (10).png',
  5.     'Vacation (Me and Mom) (21).png',
  6.     'Vacation (5) (1).png',
  7. );
  8.  
  9. $files = array();
  10.  
  11. foreach ( $filenames as $filename ) {
  12.     if ( preg_match( '/^.*\((\d+)\)/s', $filename, $matches ) ) {
  13.     	$files = array_merge($filename, $matches[1]);
  14.         echo "$filename => $matches[1]\n";
  15.     } else {
  16.         echo "$filename => no match!\n";
  17.     }
  18. }
  19.  
  20. $value = max($files);
  21. $key = array_search($value, $files);
  22.  
  23. foreach ($files as $result) {
  24.     echo $result->type;
  25.     echo "<br>";
  26. }
  27.  
  28.  
Success #stdin #stdout #stderr 0.02s 25828KB
comments (?)
stdin 
Standard input is empty
stdout 
Vacation (10).png => 10
Vacation (Me and Mom) (21).png => 21
Vacation (5) (1).png => 1
stderr 
PHP Warning:  array_merge(): Expected parameter 1 to be an array, string given in /home/wCwVsW/prog.php on line 13
PHP Warning:  array_merge(): Expected parameter 1 to be an array, string given in /home/wCwVsW/prog.php on line 13
PHP Warning:  array_merge(): Expected parameter 1 to be an array, string given in /home/wCwVsW/prog.php on line 13
PHP Warning:  max(): When only one parameter is given, it must be an array in /home/wCwVsW/prog.php on line 20
PHP Warning:  array_search() expects parameter 2 to be array, null given in /home/wCwVsW/prog.php on line 21
PHP Warning:  Invalid argument supplied for foreach() in /home/wCwVsW/prog.php on line 23
https://ideone.com/ZwTlRa
language:
PHP (php 7.3.5)
created:
1 day ago
visibility:
public

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