亵渎过滤器不起作用（php）

Question

代码：

<?php
$con=mysqli_connect("mysql17.000webhost.com","login","pwd","db");
// Check connection
if (mysqli_connect_errno())
  {
  echo "Failed to connect to MySQL: " . mysql_connect_error();
  }

$filter = mysqli_query($con,"SELECT * FROM bad_words");

$content = mysqli_fetch_array( $filter );

$old_word = $_POST("input");
$old_word = str_ireplace($content['word'], '[foul]', $old_word);

$filtered_word = $old_word;
Print($filtered_word);

mysqli_close($con);
?>

错误讯息：

  

致命错误：函数名称必须是第13行/home/a7593238/public_html/bad_filter.php中的字符串

请帮忙。

Answer 1

您正在像函数一样调用超全局数组$_POST。它是一个数组变量，您需要使用方括号访问它们。

喜欢这个。

$old_word = $_POST["input"];

Answer 2

替换

$old_word = $_POST("input");

带

$old_word = $_POST["input"];