Usually we do remove duplicate words from a text using array functions etc, but it’s quite slow doing that way because of the size of the text. The fastest way to achieve the same result is PHP regex. You can remove duplicate words using PHP regular expressions with preg_replace function.
Also, read:
- Convert Associative Array into XML in PHP
- Convert XML into Associative Array in PHP
- Converting an Array to JSON in PHP
- Converting JSON to Array or Object in PHP
Below is a complete PHP example code using regular expression to remove duplicate words from a text using PHP.
<?php
$text ='one one, two three, two';
$result_text = preg_replace("/\b(\w+)\s+\\1\b/i", "$1", $text);
echo "Result Text: ".$result_text;
?>
Result Text:
one, two three, two
You may also like:
- Working with php.ini file Configuration
- Control Statements in PHP
- Convert Associative Array into XML in PHP
- Convert XML into Associative Array in PHP
- Using Prepared Statement with PHP & MySQL
- How to Upload File in PHP
- Converting an Array to JSON in PHP
- Converting JSON to Array or Object in PHP
- Manipulating PHP arrays: push, pop, shift, unshift
- Remove Repeated Words From String in PHP
- Converting a PHP Array to a Query String
- 15+ regular expressions for PHP developers
- 10 Most Important Directory Functions in PHP
- 10 little known but useful PHP functions
- PHP Script to Download Large Files Reliably