示例代碼如下：
我想要實作的目標：不管是大寫還是小寫，如果用戶輸入的字母與條件是否也是大寫和小寫相同，我希望它為真。A = a，b = B。
例如： (D or d == d) == true | 輸出：3 - DEF (A or c == a or c) == true | 輸出：2 - ABC
<!DOCTYPE html>
<html lang = "en">
<head>
<title>Test</title>
<!-- Required meta tags -->
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<!-- BOOTSTRAP 5 -->
<link href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC" crossorigin="anonymous">
<!-- jQuery -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js">
</script>
<!-- Sweet Alert 2 -->
<script src="https://unpkg.com/sweetalert/dist/sweetalert.min.js">
</script>
</head>
<body>
<!-- Input and Output -->
<!-- INPUT -->
<div class="card">
<div class="card-header"> Input Letter: </div>
<form method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>">
<div class="card-body">
<div class="row">
<div class="col-12">
<input type="text" name="telephoneCharacter" placeholder="Input letter." class="form-label input-responsive" maxlength = "1">
</div>
<div class="col-12">
<div class="col-auto d-flex justify-content-sm-end">
<input type="submit" class="btn btn-dark">
</div>
</div>
</div>
</div>
</form>
</div>
<!-- OUTPUT -->
<div class="card-img-bottom d-flex justify-content-center">
<div class="text-uppercase">
<p class="Display-1"> Output: </p>
<div class="container-fluid">
<?php
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
$character = $_POST['telephoneCharacter'];
if ( ($character == 'A' || $character == 'a' ) || ($character == 'B' || $character == 'b' ) || ($character == 'C' || $character == 'c') ) {
print "<p class='text-muted h4'> 2 - ABC</p>";
} else if ( ($character == 'D' || $character == 'd' ) || ($character == 'E' || $character == 'e' ) || ($character == 'F' || $character == 'f') ) {
print "<p class='text-muted h4'> 3 - DEF</p>";
} else if ( ($character == 'G' || $character == 'g' ) || ($character == 'H' || $character == 'h' ) || ($character == 'I' || $character == 'i') ) {
print "<p class='text-muted h4'> 4 - GHI</p>";
} else if ( ($character == 'J' || $character == 'j' ) || ($character == 'K' || $character == 'k' ) || ($character == 'L' || $character == 'l') ) {
print "<p class='text-muted h4'> 5 - JKL</p>";
} else if ( ($character == 'M' || $character == 'm' ) || ($character == 'N' || $character == 'n' ) || ($character == 'O' || $character == 'o') ) {
print "<p class='text-muted h4'> 6 - MNO</p>";
}
}
?>
</div>
</div>
</div>
<!-- BOOTSTRAP 5 Script -->
<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/js/bootstrap.bundle.min.js" integrity="sha384-MrcW6ZMFYlzcLA8Nl NtUVF0sA7MsXsP1UyJoMp4YLEuNSfAP JcXn/tWtIaxVXM" crossorigin="anonymous"></script>
</body>
</html>
uj5u.com熱心網友回復：
創建一個所有大小寫相同的有效字符陣列（在本例中為大寫），然后將輸入與陣列中的條目轉換為大寫
$character = 'd';
if ( in_array(strtoupper($character), ['A','B','C'] )) {
print "<p class='text-muted h4'> 2 - ABC</p>";
}
if ( in_array(strtoupper($character), ['D','E','F'] )) {
print "<p class='text-muted h4'> 3 - DEF</p>";
}
if ( in_array(strtoupper($character), ['G','H','I'] )) {
print "<p class='text-muted h4'> 4 - GHI</p>";
}
if ( in_array(strtoupper($character), ['J','K','L'] )) {
print "<p class='text-muted h4'> 5 - JKL</p>";
}
if ( in_array(strtoupper($character), ['M','N','O'] )) {
print "<p class='text-muted h4'> 6 - MNO</p>";
}
轉載請註明出處，本文鏈接：https://www.uj5u.com/qita/334753.html
上一篇：Wordpress如何洗掉父類別并僅保留帶有帖子標題的子類別
下一篇：如何重構這個函式？