前几行只是仔细检查所有变量是否符合要求。它们都给出了正确的数据。
print_r（$stack）确实给出了上述数组元素（+和更多元素）
<?php
$item_name = $_POST['item_name'];
echo $item_name.'<br/><br/>'; // IBM-3246785
print_r($stack); // Array ( [0] => IBM-3246785 [1] => IBM-3567465 [2] => IBM-4579645 [3] => [4] => IBM-1234567 [5] => [6] => IBM-12345678 [7] => [8] => IBM-24374365 )
$key = array_search($item_name, $stack);
if ($key !== false) {
echo "The key where find was found is:" . $key;
} else{
echo $item_name . " was NOT FOUND in the array";
};
?>
数组搜索返回false EVERYTIME！！！尝试用IBM-3246785替换$item_name-问题仍然存在。无法使其返回所选"item_name"的索引/键。
我刚刚在这里运行了这段代码---
<?php
$item_name = "IBM-3246785";
$stack = Array (0 => 'IBM-3246785', 1 => 'IBM-3567465', 2 => 'IBM-4579645', 3 => 'IBM-1234567',4 => 'IBM-12345678', 5 => 'IBM-24374365');
$key = array_search($item_name, $stack);
if ($key !== false) {
echo "The key where find was found is:" . $key;
} else{
echo $item_name . " was NOT FOUND in the array";
};
?>
它返回-找到find的密钥是：0
您可以尝试比较$item_name和$stack[0]，如if ($item_name == $stack[0]) echo "Done";您可以尝试先检查false，如if ($key === false) echo "Not"; else echo "Is";也许您可以尝试不同的函数来检索正确的数组键。