How can external files be used to filter out specific words from a string in PHP?

To filter out specific words from a string in PHP using external files, you can create a text file containing the words you want to filter out. Then, read the contents of this file into an array and use the `str_replace` function to replace these words with an empty string in your original string. 

// Read the list of words to filter out from an external file
$filteredWords = file('filtered_words.txt', FILE_IGNORE_NEW_LINES);

// Original string
$string = "This is a sample string with some filtered words.";

// Replace filtered words with an empty string
$newString = str_replace($filteredWords, '', $string);

echo $newString;

Keywords

PHP external files filter specific words string manipulation

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