Online PHP editor | output for 4kqsD

<?php $texts[] = <<<TEXT EXCLUDE this entire line include this line even this to EXCLUDE and EXCLUDE this and this as single match and EXCLUDE this line TEXT; $texts[] = <<<TEXT EXCLUDE this entire line and EXCLUDE this and this as single match TEXT; $texts[] = <<<TEXT EXCLUDE this entire line even this to EXCLUDE and EXCLUDE this and EXCLUDE this line TEXT; $texts[] = <<<TEXT include this line even this to EXCLUDE TEXT; var_export( preg_replace('/(\R)?.*\bEXCLUDE\b.*(?(1)|\R?)/', '', $texts) );