php - Sort by part of filename

319

I have a$inhalte = glob("*.jpg"); listing pictures in a directory. Those files look like this

Constant1-Constant2-Input-ToBeSorted1-Date1.jpg
Constant1-Constant2-Output-ToBeSorted2-Date2.jpg
Constant1-Constant2-Input-ToBeSorted3-Date3.jpg
Constant1-Constant2-Output-ToBeSorted4-Date4.jpg
...

They should be sorted byToBeSorted alphabetically. Sorting them by name a/descendingly does not work, as theInput/Output interferes.

How do I accomplish that?

Answer

Solution:

strstr provides the string behind 'ToBeSorted' and helps to make a simple comparison for usort().

//$inhalte is the array supplied by glob()
usort($inhalte, function($a, $b){
  return strstr($a,"ToBeSorted") <=> strstr($b,"ToBeSorted");
});

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