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<?php $string = "this.is.a.test.to.see.how.preg_split.can.be.used.for.this"; var_export( preg_split( '/\.[^.]*\K\./', $string, 0, PREG_SPLIT_NO_EMPTY ) );
Output for 8.0.1 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
array ( 0 => 'this.is', 1 => 'a.test', 2 => 'to.see', 3 => 'how.preg_split', 4 => 'can.be', 5 => 'used.for', 6 => 'this', )

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