php 警告：array_merge()：当处理两个 $_POST 时，参数 #1 不是数组
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Warning: array_merge(): Argument #1 is not an array, when processing two $_POST
提问by acctman
I'm receiving the following error Warning: array_merge(): Argument #1 is not an arraywhen processing $_POST['cpl'], although $_POST['add']works fine
我收到以下错误警告：array_merge(): Argument #1 is not an arraywhen processing $_POST['cpl']，虽然$_POST['add']工作正常
if (is_array($_POST['add'])) {
foreach ($_POST['add'] as $key => $value) $_POST['add'][$key] = mysql_real_escape_string($value);
$en = array_merge($en, $_POST['add']);
}
if (is_array($_POST['cpl'])) {
foreach ($_POST['cpl'] as $key => $value) $_POST['cpl'][$key] = mysql_real_escape_string($value);
$cp = '';
$cp = array_merge($cp, $_POST['cpl']);
}
回答by John Conde
That's because $cpis a string (you explicitly defined it that way).
那是因为$cpis 是一个字符串（您以这种方式明确定义了它）。
$cp = ''; // <-- empty string
$cp = array_merge($cp, $_POST['cpl']);
should be:
应该：
$cp = array(); // <--now it's an array
$cp = array_merge($cp, $_POST['cpl']);
回答by Sven
You have these lines:
你有这些行：
$cp = '';
$cp = array_merge($cp, $_POST['cpl']);
It's self-explanatory: $cpis a string first, the error is simply about this fact. Initialize it with array()instead.
这是不言自明的：$cp首先是一个字符串，错误只是关于这个事实。用array()代替初始化它。
