Are there any best practices for implementing content validation in PHP to prevent the use of inappropriate language?

To prevent the use of inappropriate language in content validation in PHP, one best practice is to create a list of banned words or phrases and check user input against this list before allowing it to be submitted. This can be done using PHP's `strpos` function to search for banned words in the input text. 

$banned_words = array("badword1", "badword2", "badword3");

$user_input = $_POST['user_input'];

foreach ($banned_words as $word) {
    if (strpos($user_input, $word) !== false) {
        // Handle inappropriate language found
        echo "Please refrain from using inappropriate language.";
        exit;
    }
}

// Proceed with submitting the user input

Keywords

content validation PHP inappropriate language filtering sanitization

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