Remove Duplicate Lines
by bill - 2025-03-08 04:42:33 ( in education, tech, computers, software) [php version] rebuild
I created this because I needed it regularly, and thought I'd share. Click here to run it, and look below to make one for yourself:
<!DOCTYPE html>
<html lang="en"><head><meta charset="UTF-8"><title>Remove Duplicate Lines</title></head>
<body><h2>Remove Duplicate Lines</h2>
<form method="post" action="">
<textarea name="inputText" rows="10" cols="50" placeholder="Paste your text here..."></textarea><br><br> <button type="submit" name="submit">Remove Duplicates</button>
</form>
<?php
if (isset($_POST['submit'])) {
$inputText = $_POST['inputText'];
$lines = explode("\n", $inputText); // Split the input into lines
$uniqueLines = array_unique($lines); // Remove duplicates
$resultText = implode("\n", $uniqueLines); // Join lines back together
echo "<h3>Result:</h3>";
echo "<textarea rows='10' cols='50'>" . htmlspecialchars($resultText) . "</textarea>";
}
?>
</body></html>
similar posts here ... and elsewhere