Question

所以我这里有一些代码可以从标准的Web表单中获取用户输入：

if (get_magic_quotes_gpc()) {
    $searchsport = stripslashes($_POST['sport']);
    $sportarray = array(
        "Football" => "Fb01",
        "Cricket" => "ck32",
        "Tennis" => "Tn43",
    );
    if (isset($sportarray[$searchsport])) {
        header("Location: " . $sportarray[$searchsport] . ".html");
    die;
}

我如何修改这个（我认为这个词正在解析？）以使其敏感？例如，我输入“fOoTbAlL”，PHP会直接指向Fb01.html。

请注意，代码只是一个示例。用户输入的字符串可以包含多个单词，例如“Crazy aWesOme HarpOOn-Fishing”，如果数组元素“Crazy Awesome Harpoon-Fishing”（请注意首都F之前）它仍然有用破折号。

Answer 1

我会使用字符串函数strtolower()。

Answer 2

最简单的方法是使用strtolower将所有内容设为小写以进行比较。

Answer 3

您可以像这样修改代码：

// Searches for values in case-insensitive manner
function in_arrayi($needle, $haystack) {
    return in_array(strtolower($needle), array_map('strtolower', $haystack));
}

$searchsport = $_POST['sport'];
$sportarray = array(
    "Football" => "Fb01",
    "Cricket" => "ck32",
    "Tennis" => "Tn43",
);

if(in_arrayi($searchsport, $sportarray)){
    header("Location: " . $sportarray[$searchsport] . ".html");
    die;
}

Answer 4

$searchsport = strtolower($_POST['sport']);
$sportarray = array(
    "football" => "Fb01",
    "cricket" => "ck32",
    "tennis" => "Tn43",
);
if (isset($sportarray[$searchsport])){
    header("Location: " . $sportarray[$searchsport] . ".html");
    die;
}

通过这种方式，搜索字符串和数组键都是小写的，您可以进行不区分大小写的比较。

如果您想保留$sportarray键的大小写，请执行以下操作：

$searchsport = ucfirst(strtolower($_POST['sport']));
$sportarray = array(
    "Football" => "Fb01",
    "Cricket" => "ck32",
    "Tennis" => "Tn43",
);
if (isset($sportarray[$searchsport])){
    header("Location: " . $sportarray[$searchsport] . ".html");
    die;
}

Answer 5

<?php
$searchsport = $_POST['sport'];
$sportarray = array(
"Football" => "Fb01",
"Cricket" => "ck32",
"Tennis" => "Tn43",
);
if(isset($sportarray[ucfirst(strtolower($searchsport]))])){
    header("Location: ".$sportarray[$searchsport].".html");
    die;
}
?>

注意ucfirst(strtolower($searchsport]))？

LE：添加了ucfirst

PHP从Web表单输入不区分大小写的输入？

5 个答案: