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<?php $string = '100 grams almonds (preferrably raw) && 1 egg'; var_export( preg_match_all( '/\w+(?: && \d+| \([^)]+\))*/', $string, $m ) ? $m[0] : [] );
Output for git.master, git.master_jit, rfc.property-hooks
array ( 0 => '100', 1 => 'grams', 2 => 'almonds (preferrably raw) && 1', 3 => 'egg', )

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