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<?php
 
$oldtext = "super.long.filename.tiff";
$newtext = preg_replace('/^(.+)(\.)(.+)$/', '$1-150*150$2$3', $oldtext);
echo $newtext;

Success #stdin #stdout 0.01s 20568KB

stdin

copy

Standard input is empty

stdout

copy

super.long.filename-150*150.tiff

https://ideone.com/SFkJbR

language:

PHP (php 7.3.5)

created:

visibility:

public

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