php clean user input

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Erica
24 Jul 2018
1<?php
2    function cleanUserInput($userinput) {
3  
4  		// Open your database connection
5      	$dbConnection = databaseConnect();
6  
7  		// check if input is empty
8        if (empty($userinput)) {
9          return;
10        } else {
11          
12        // Strip any html characters
13        $userinput = htmlspecialchars($userinput);
14        
15		// Clean input using the database  
16        $userinput = mysqli_real_escape_string($dbConnection, $userinput);
17        }
18       
19  	  // Return a cleaned string
20      return $userinput;
21    }
22?>
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