How to write own DD() function same as laravel?

Laravel's dd uses symfony's VarDump component. It provides a globally available dump function which formats the output. The only difference is that it won`t "die" after the dump, you'll have to do that manually - but in most cases that isn't even something you'd want.

1. Run composer global require symfony/var-dumper (assuming you have composer in your wordpress project)
2. Add auto_prepend_file = ${HOME}/.composer/vendor/autoload.php to your php.ini file;
3. From time to time, run composer global update symfony/var-dumper to have the latest bug fixes.

Here is the documentation for the VarDumper component. https://symfony.com/doc/current/components/var_dumper.html

Before var-dumpr version 4.1:

Declare a dd function, dumping all arguments and stopping the process:

if (!function_exists('dd')) {    function dd()    {        foreach (func_get_args() as $x) {            dump($x);        }        die;    } }

After var-dump version 4.1:

Since var-dumper version 4.1, dd() is already declared. Loading the library is enough.

I updated more functions and latest code of d functions below in debug functions package.

(Below answer is about 1 year ago.)

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Below is my own code. It can work in plain PHP (no framework).

function d($data){    if(is_null($data)){        $str = "<i>NULL</i>";    }elseif($data == ""){        $str = "<i>Empty</i>";    }elseif(is_array($data)){        if(count($data) == 0){            $str = "<i>Empty array.</i>";        }else{            $str = "<table style=\"border-bottom:0px solid #000;\" cellpadding=\"0\" cellspacing=\"0\">";            foreach ($data as $key => $value) {                $str .= "<tr><td style=\"background-color:#008B8B; color:#FFF;border:1px solid #000;\">" . $key . "</td><td style=\"border:1px solid #000;\">" . d($value) . "</td></tr>";            }            $str .= "</table>";        }    }elseif(is_resource($data)){        while($arr = mysql_fetch_array($data)){            $data_array[] = $arr;        }        $str = d($data_array);    }elseif(is_object($data)){        $str = d(get_object_vars($data));    }elseif(is_bool($data)){        $str = "<i>" . ($data ? "True" : "False") . "</i>";    }else{        $str = $data;        $str = preg_replace("/\n/", "<br>\n", $str);    }    return $str;}function dnl($data){    echo d($data) . "<br>\n";}function dd($data){    echo dnl($data);    exit;}function ddt($message = ""){    echo "[" . date("Y/m/d H:i:s") . "]" . $message . "<br>\n";}

The Laravel dd is actually a great function. However, the undergoing mechanism is var_dump and then die.

Example:

$arr = [1,2,3,4,5,6];var_dump($arr);die();