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<?php $string = '@mention_1 @$badmention Manual balls knit cardigan @120rb email me @ example@example.com'; $count = preg_match_all( '/(?:^|\s)@\K\w+/', $string, $matches ); var_export([ 'count' => $count, 'matches' => $matches[0] ]);
Output for git.master, git.master_jit, rfc.property-hooks
array ( 'count' => 2, 'matches' => array ( 0 => 'mention_1', 1 => '120rb', ), )

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