cakephp/templates/element/exception_stack_trace.php

<?php
/**
 * Prints a stack trace for an exception
 *
 * CakePHP(tm) : Rapid Development Framework (https://cakephp.org)
 * Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
 *
 * Licensed under The MIT License
 * For full copyright and license information, please see the LICENSE.txt
 * Redistributions of files must retain the above copyright notice.
 *
 * @copyright     Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
 * @link          https://cakephp.org CakePHP(tm) Project
 * @since         1.3.0
 * @license       https://opensource.org/licenses/mit-license.php MIT License
 * @var array $trace
 */
use Cake\Error\Debugger;

foreach ($trace as $i => $stack):
    $excerpt = $params = [];

    $line = null;
    if (isset($stack['file'], $stack['line']) && is_numeric($stack['line'])):
        $line = $stack['line'];
        $excerpt = Debugger::excerpt($stack['file'], $line, 4);
    endif;

    if (isset($stack['file'])):
        $file = $stack['file'];
    else:
        $file = '[internal function]';
    endif;

    if (isset($stack['function'])):
        if (!empty($stack['args'])):
            foreach ((array)$stack['args'] as $arg):
                $params[] = Debugger::exportVar($arg, 4);
            endforeach;
        else:
            $params[] = 'No arguments';
        endif;
    endif;
?>
    <div id="stack-frame-<?= $i ?>" style="display:<?= $i === 0 ? 'block' : 'none'; ?>;" class="stack-details">
        <div class="stack-frame-header">
            <span class="stack-frame-file">
                <?php if ($line !== null): ?>
                    <?= $this->Html->link(Debugger::trimPath($file), Debugger::editorUrl($file, $line)); ?>
                <?php else: ?>
                    <?= h(Debugger::trimPath($file)); ?>
                <?php endif; ?>
            </span>
            <a href="#" class="toggle-link stack-frame-args" data-target="stack-args-<?= $i ?>">Toggle Arguments</a>
        </div>

        <table class="code-excerpt" cellspacing="0" cellpadding="0">
        <?php $lineno = isset($stack['line']) && is_numeric($stack['line']) ? $stack['line'] - 4 : 0 ?>
        <?php foreach ($excerpt as $l => $line): ?>
            <tr>
                <td class="excerpt-number" data-number="<?= $lineno + $l ?>"></td>
                <td class="excerpt-line"><?= $line ?></td>
            </tr>
        <?php endforeach; ?>
        </table>

        <div id="stack-args-<?= $i ?>" class="cake-debug" style="display: none;">
            <h4>Arguments</h4>
            <?php foreach ($params as $param): ?>
                <div class="cake-debug"><?= $param ?></div>
            <?php endforeach; ?>
        </div>
    </div>
<?php endforeach; ?>