缩短if语句

Question

我在代码中执行此if语句，以便在支票内的页面上添加横幅<div>。我怎样才能更好地整理这些代码？

    $currentpage = $_SERVER['REQUEST_URI'];
    if($currentpage=="/" || $currentpage=="/en" || $currentpage=="/pl" || $currentpage=="/cz" || $currentpage=="/index.php" || $currentpage=="/index.php/" || $currentpage=="" || 
        $currentpage=="/en/index.php" || $currentpage=="/en/index.php/" ||  
        $currentpage=="/pl/index.php" || $currentpage=="/pl/index.php/" || 
        $currentpage=="/cz/index.php" || $currentpage=="/cz/index.php/" ||  
        $currentpage=="/flyeuro/en/index.php/" || $currentpage=="/flyeuro/en/index.php" || 
        $currentpage=="/flyeuro/pl/index.php/" || $currentpage=="/flyeuro/pl/index.php" ||
        $currentpage=="/flyeuro/cz/index.php/" || $currentpage=="/flyeuro/cz/index.php")
    {

Answer 1

你可以这样做：

<?php
    // add your all URLs to an array
    $urls = array("/en/index.php", "/en/index.php/", "/", "/en");

    if(in_array($currentpage, $urls)) {
        echo "It exists";
    } else {
        echo "It does not exist";
    }
?>