如果||，我的代码无法正常工作

Question

这是我的代码

<?php

if( $country==("United Stats" || Canada || United Kingdom) ) {
   echo $Country;
}

?>

我想说“if Country == United Stats'或'Canada'或'United Kingdom＆gt;＆gt;＆gt;  echo $ Country

当我使用||时它无法正常工作 有什么不对吗？

Answer 1

你不能这样做，你需要写：

if( $country=="United Stats" || $country=="Canada" || $country=="United Kingdom" ) {

Answer 2

<?php
$cs = array('United States', 'Canada', 'United Kingdom');
if(in_array($country, $cs)){
echo $country
}
?>

Answer 3

if (in_array($country, array('United Stats', 'Canada', 'United Kingdom'))) {

Answer 4

您必须将$ country与每个变量进行比较

if ($country == "United States" ||
    $country == "Canada" ||
    $country == "United Kingdom") {

    echo $country;
}

Answer 5

<?php
if( $country=="United Stats" Or $country=="Canada" Or $country=="United Kingdom" ) {
   echo $country;
}
?>

或者

<?php
if( $country=="United Stats" || $country=="Canada" || $country=="United Kingdom" ) {
   echo $country;
}
?>

Answer 6

您的代码不是有效的PHP语法。这个可行：

<?php

if( $country == "United Stats" || $country == "Canada"
        || $country == "United Kingdom" ) {
    echo $country;
}

?>

顺便说一下，你似乎是PHP的新手。你应该阅读documentation和一本书来学习这门语言。

Answer 7

<?php

$country = "Canada";
if( $country=="United Stats" || $country=="Canada" || $country=="United Kingdom" ) {
   echo $country;
}

?>