PHP 注意：数组到字符串转换错误
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PHP Notice: Array to string conversion Error
提问by ngplayground
Been experiencing this error for a little while and can't find any conclusive answers on fixing it. I have tried removing quotes from $keyin line 59 but to no avail.
已经遇到这个错误一段时间了，但找不到修复它的任何结论性答案。我曾尝试从$key第 59 行中删除引号，但无济于事。
if (!get_magic_quotes_gpc()) {
if (isset($_POST)) {
foreach ($_POST as $key => $value) {
$_POST['$key'] = trim(addslashes($value));
}
}
if (isset($_GET)) {
foreach ($_GET as $key => $value) {
$_GET[$key] = trim(addslashes($value));
}
}
}
LINE 59
第 59 行
$_POST['$key'] = trim(addslashes($value));
Error On Screen
屏幕上的错误
Notice: Array to string conversion in C:\Inetpub\vhosts\domain.com\httpdocs\library\config.php on line 59
注意：C:\Inetpub\vhosts\domain.com\httpdocs\library\config.php 中第 59 行的数组到字符串的转换
采纳答案by Starx
Check if it is array before you assign it
在分配之前检查它是否是数组
$_POST[$key] = !is_array($value) ? trim(addslashes($value)) : '';
// ^ Remove the quotes here // ^ Do something
// Instead of
// Using empty
回答by vanurag
I think you should use this code $_POST[$key] = $value;instead of using this $_POST['$key'] = trim(addslashes($value));
我认为您应该使用此代码$_POST[$key] = $value;而不是使用此$_POST['$key'] = trim(addslashes($value));
or make a check if the value is in array or not
或检查该值是否在数组中
回答by David 'the bald ginger'
According to PHP.netthe function addslashes() takes a String type as parameter. Check what type $value is. If it is an array itself then addslashes() may be throwing the error.
根据PHP.net，函数addslashes() 将字符串类型作为参数。检查 $value 是什么类型。如果它是一个数组本身，那么addslashes() 可能会抛出错误。
PS: You should use $_POST[$key] rather than $_POST['$key'] if you want to use the value of $key as the index of the $_POST array.
PS：如果你想使用 $key 的值作为 $_POST 数组的索引，你应该使用 $_POST[$key] 而不是 $_POST['$key'] 。
回答by Barmar
Do this:
做这个：
foreach ($_POST as &$value) {
$value = is_array($value) ?
array_map(function($x) { return trim(addslashes($x)); } :
trim(addslashes($value));
}
However, this could still fail if any of your parameters are multi-dimensional arrays. As mentioned in the comments, the right solution is to use prepared queries with parameters, rather than interpolating strings into SQL.
但是，如果您的任何参数是多维数组，这仍然可能会失败。正如评论中提到的，正确的解决方案是使用带参数的准备好的查询，而不是将字符串插入到 SQL 中。
