优化 PHP 中的 preg_match()

Question

我在 PHP 中使用以下函数来检测包含“near”的字符串中的实体和位置preg_match();。有没有更优化的方法来为此编写代码？我使用了很多 if 语句，似乎可以改进，但我不确定如何改进。

// Test cases

$q = "red robin near seattle";

//$q = "red robin near me";

//$q = "red robin nearby";

//$q = "red robin near my location";

function getEntityAndLocation($q){

    $entityAndLocation = array("entity" => null, "location" => null);

    if(preg_match('(nearby)', $q) === 1) {

        $breakdown = explode("nearby", $q);

        $entityAndLocation["entity"] = $breakdown[0];

        $entityAndLocation["location"] = $breakdown[1];

        return $entityAndLocation;

    }

    if(preg_match('(near my location)', $q) === 1) {

        $breakdown = explode("near my location", $q);

        $entityAndLocation["entity"] = $breakdown[0];

        $entityAndLocation["location"] = $breakdown[1];

        return $entityAndLocation;

    }

    if(preg_match('(near me)', $q) === 1) {

        $breakdown = explode("near me", $q);

        $entityAndLocation["entity"] = $breakdown[0];

        $entityAndLocation["location"] = $breakdown[1];

        return $entityAndLocation;

    }

    if(preg_match('(near)', $q) === 1) {

        $breakdown = explode("near", $q);

        $entityAndLocation["entity"] = $breakdown[0];

        $entityAndLocation["location"] = $breakdown[1];

        return $entityAndLocation;

    }

}

if(preg_match('(near)', $q) === 1) {

  $entityAndLocation = getEntityAndLocation($q);

  print_r($entityAndLocation);

}

Answer 1

usepreg_split()使用正则表达式作为分隔符来分割字符串。您可以编写一个匹配所有模式的正则表达式。function getEntityAndLocation($q){    $entityAndLocation = array("entity" => null, "location" => null);    $breakdown = preg_split('/near(?:by| my location| me)?/', $q);    if (count($breakdown) >= 2) {        $entityAndLocation["entity"] = $breakdown[0];        $entityAndLocation["location"] = $breakdown[1];        return $entityAndLocation;    }    return $entityAndLocation;}正则表达式匹配near，可以选择后跟by, my location, 或me。