<?php
$buttons_get = 'back/tenon/tenon_inserts.txt';
$buttons_arc = [];

if (file_exists($buttons_get) && is_readable($buttons_get)) {
    $buttons_arc = file($buttons_get, FILE_IGNORE_NEW_LINES);
}

if (!empty($buttons_arc)) {
    foreach($buttons_arc as $buttons_button) {
        if (trim($buttons_button) === '') {
            echo "<br>";
        } else {
            $label_insert = explode('||', $buttons_button);
            $btn_value = $label_insert[0] ?? '';
            $btn_title = $label_insert[1] ?? '';
            echo "<input type='button' value='" . htmlspecialchars($btn_value, ENT_QUOTES, 'UTF-8') . "' title='" . htmlspecialchars($btn_title, ENT_QUOTES, 'UTF-8') . "' onclick='addSym(this)' class='tenon_insert_button' />";
        }
    }
}
?>