[ Posted by Martin ] Word analysing in texts

fiddle_038149.php

<?php
$analyze = '';
$punctuations = '.:-,;–_?!';
if (isset($_POST['analyze']) and trim($_POST['analyze']) != '') {
    $analyze = $_POST['analyze'];
    $analyzed = preg_replace( "/\r|\n/", " ", $analyze );
    $len = strlen($analyze);
    $pl = strlen($punctuations);
    for ($i=0; $i < $pl; $i++) {
        $analyzed = str_replace($punctuations[$i], ' ', $analyzed);
    }
    $words = array_filter(explode(' ', $analyzed));
    $result = [
        'characters' => $len,
        'count' => count($words),
        'differents' => count(array_unique($words)),
    ];
    echo '<pre>' . print_r($result, true) . '</pre>';
}
?>

<!-- Your forms -->
<form action="" method="POST" class="myForm">
    <textarea placeholder="Dein Text" name="analyze" style="width: 100%;" rows="10"><?php echo $analyze; ?></textarea>
    <input type="submit" id="submit" value="analysieren" />
</form>