How can PHP be used to implement a word filter to detect inappropriate words within text?

To implement a word filter in PHP to detect inappropriate words within text, you can create an array of inappropriate words and then use PHP's `str_ireplace` function to replace any occurrences of these words with a placeholder like "***". This will help censor the inappropriate words in the text. 

<?php
$inappropriate_words = array("badword1", "badword2", "badword3");
$text = "This is a sample text containing badword1 and badword2.";

foreach($inappropriate_words as $word) {
    $text = str_ireplace($word, "***", $text);
}

echo $text;
?>

Keywords

PHP word filter inappropriate words text processing string manipulation

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