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<?php $string = '{IF bla}Text 1{ELSEIF ble}Text 2 {IF bli}Text 2.1{ELSE blo}Text 2.1{ENDIF} Main text end{/ENDIF}'; var_dump(preg_match('#\{IF [^}]*\}[^{]*\{ENDIF\}#is',$string,$m)); var_dump($m);

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