A simple dump and exit function

d.php

if(!function_exists('d')){
    /**
     * Short wrapper helper function for the junker debugger
     */
    function d(){
        $junker = new \Junker\Junker();

        $junker->withStyles = true;

        $junker->withCloser = true;

        $junker->d(func_get_args());
    }
}

Junker.php

<?php

namespace Junker;

/**
 * Class Junker
 *
 * Dump some dismissable data - contains basic styles in order to help position
 *                              the dump and make it clearer to use without
 *                              clogging up some valuable screen space
 */
class Junker {
    const DEFAULTS_WITH_STYLES = false;
    const DEFAULTS_WITH_CLOSER = false;
    const DEFAULTS_WITH_EXIT = false;

    public $withStyles = false;
    public $withCloser = false;
    public $withExit = false;

    /**
     * Junker constructor.
     *
     * @param bool $withStyles
     * @param bool $withCloser
     * @param bool $withExit
     */
    public function __construct(
        $withStyles = self::DEFAULTS_WITH_STYLES,
        $withCloser = self::DEFAULTS_WITH_CLOSER,
        $withExit = self::DEFAULTS_WITH_EXIT
    ){
        $this->withStyles = (boolean) $withStyles;
        $this->withCloser = (boolean) $withCloser;
        $this->withExit = (boolean) $withExit;
    }

    /**
     * Display junk
     */
    public function d(){
        if($this->withStyles){
            $this->addStyles();
        }

        ?>
            <pre class="dump">
                <code>
                    <span class="dump-title">
                        Dump data
                        <?php if($this->withCloser) : ?>
                            <span onclick="this.parentNode.parentNode.parentNode.remove()">close</span>
                        <?php endif; ?>
                    </span>
                    <?php
                        array_map(
                            function($dump){
                                var_dump($dump);
                            },
                            func_get_args()
                        );
                    ?>
                </code>
            </pre>
        <?php

        if($this->withExit){
            exit;
        }
    }

    /**
     * Add styles to junk
     */
    private function addStyles(){
        ?>
            <style>
                body {
                    margin: 0;
                }

                pre.dump {
                    background: #fff;
                    bottom: 0;
                    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
                    font-family: monospace;
                    height: calc(50vh - 32px);
                    margin: 16px;
                    max-height: 600px;
                    left: 0;
                    overflow-y: auto;
                    padding: 16px;
                    position: fixed;
                    width: calc(100% - 32px);
                    z-index: 9999999999999999;
                }

                pre.dump:before,
                pre.dump:after {
                    clear: both;
                    content: '';
                    display: table;
                }

                pre.dump > code {
                    float: left;
                    margin: 0;
                    position: relative;
                    white-space: nowrap;
                }

                pre.dump > code > .dump-title {
                    display: block;
                    font-size: 20px;
                    margin-bottom: 12px;
                }

                pre.dump > code > .dump-title > span {
                    cursor: pointer;
                    background: rgba(0,0,0,0.3);
                    border-radius: 0.2em;
                    font-size: 16px;
                    padding: 3px 6px;
                    transition: background 0.3s;
                }

                pre.dump > code > .dump-title > span:hover {
                    background: rgba(0,0,0,0.15);
                }

                pre.dump > code > pre {
                    margin: 0;
                }
            </style>
        <?php
    }
}