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<?php $strings = [ 'this/is/the/path/to/my/fileA.php', 'this/could/also/be/the/path/to/my/fileB.php', 'another/example/of/a/long/address/which/is/a/path/to/my/fileC.php', ]; var_export( preg_replace( '~.*((?:/[^/]*){4}$)~', '$1', $strings ) );
Output for git.master, git.master_jit, rfc.property-hooks
array ( 0 => '/path/to/my/fileA.php', 1 => '/path/to/my/fileB.php', 2 => '/path/to/my/fileC.php', )

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