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<?php $str = "Matt Person emailaddr@email.com John doe doesoe@gmail Matt Person emailaddr@email.com Trump donald@whitehouse"; $find = "Matt Person emailaddr@email.com"; $arr=explode("\n", $str); Foreach($arr as $key => &$line){ If($line == $find){ Unset($arr[$key]); } } Echo implode("\n", $arr);

preferences:
43.9 ms | 1971 KiB | 5 Q