PHP – 字符串逻辑分析 – “X和Y或Z”
发布时间:2020-12-13 18:18:56 所属栏目:PHP教程 来源:网络整理
导读:我想采用未知长度的和/或逻辑查询查询字符串: $logic = 'elephants and tigers or dolphins and apes or monkeys and humans and gorillas and and 133322 or 2'; 并将其解析为数组,我假设看起来像: $parsed_to_or = array( array('elephants','tigers'),a
我想采用未知长度的和/或逻辑查询查询字符串:
$logic = 'elephants and tigers or dolphins and apes or monkeys and humans and gorillas and and 133322 or 2'; 并将其解析为数组,我假设看起来像: $parsed_to_or = array( array('elephants','tigers'),array('dolphins','apes'),array('monkeys','humans','gorillas','133322'),array('2') ); 这是我到目前为止: $logic_e = preg_split('/s+/',$logic); $or_segments = array(); $and_group = array(); foreach($logic_e as $fragment) { if (preg_match('/^(and|&&)$/i',$fragment)) { continue; } elseif (preg_match('/^(or|||)$/i',$fragment)) { if (count($and_group)>0) { $or_segments[] = $and_group; $and_group = array(); } continue; } else { $and_group[] = $fragment; continue; } } if (count($and_group)>0) { $or_segments[] = $and_group; $and_group = array(); } 有没有更好的方法来解决这个问题?
更新:添加了使用&& ;;的功能和||随地
您可以执行以下操作: <?php $logic = 'elephants && tigers || dolphins && apes || monkeys and humans and gorillas and && 133322 or 2'; $result = array(); foreach (preg_split('/ (or|||) /',$logic) as $parts) { $bits = preg_split('/ (and|&&) /',$parts); for ($x=0; $x<count($bits); $x++) { $bits[$x] = preg_replace('/s?(and|&&)s?/','',$bits[$x]); } $result[] = $bits; } echo '<pre>'; var_dump($result); 这将导致以下结果: array(4) { [0]=> array(2) { [0]=> string(9) "elephants" [1]=> string(6) "tigers" } [1]=> array(2) { [0]=> string(8) "dolphins" [1]=> string(4) "apes" } [2]=> array(4) { [0]=> string(7) "monkeys" [1]=> string(6) "humans" [2]=> string(8) "gorillas" [3]=> string(6) "133322" } [3]=> array(1) { [0]=> string(1) "2" } } (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |