如果消息字段包含某些单词(PHP)，如何阻止表单提交

Question

如果消息字段包含某些单词，我想阻止联系人表单提交。我使用一个、两个三个

//Prevent the form from submission if it contains one, two, or three
$needle = ['one', 'two', 'three'];
if (stripos($message, $needle) !== false) {
echo "$message contains $needle";
}

这对我不起作用。然而，我只用一个词来测试它，它起作用了：

if (stripos($message, 'one') !== false) {
echo 'invalid message format';
}

如果上面的数组不起作用，我如何用PHP检查消息中的多个单词？

Answer 1

您需要使用for循环。

$needle_arr = ['one', 'two', 'three'];
$included = [];
foreach($needle_arr as $needle)
if (stripos($message, $needle) !== false) {
$included []= $needle;
}
if(count($included) > 0)
echo "$message contains ".implode(", ", $included);

Answer 2

您需要在数组上循环。

$word_found = false;
foreach ($needles as $word) {
if (stripos($message, $word) !== false) {
$word_found = $word;
break;
}
}
if ($word_found) {
echo "$message contains $word_found";
}