Set of utility/debugging PHP functions.

define('DPR_DEVELOPER_IPS', '127.0.0.1, 192.168.0.1')
List of comma-separated IPs or false to disable this check. Spaces are trimmed. Declares IP addresses allowed to see the debug info. For users not matching this filter dpr() will simply return first passed argument and do nothing.

define('DPR_SHOW_MEMINFO', true)
Whether show memory info or not

define('DPR_ENCODING', 'utf-8')
Default encoding to send with header('Content-Type: text/plain; charset=<your encoding here>');

$_SERVER['REQUEST_TIME_FLOAT'] = microtime(true);
Optionally you can put this line to the very start of your execution flow to measure request execution time.
If not present, dpr() will set it up as the time of include 'dpr.php';.

is_developer(); // Returns boolean
Returns true if $_SERVER['REMOTE_ADDR'] is in DPR_DEVELOPER_IPS constant.

dpr($var : any, ...);
Basic functionality. Prints variables provided as arguments and stops the script execution.

dprv($var : any, ...); // -v for "var_dump"
Same as dpr(), but uses var_dump() instead of print_r()

dprt(); // -t for "trace"
Prints backtrace and stops the script execution.

dprb(); // -b for "breakpoint"
Defines a breakpoint for dprd() function.

dprd($var : any, ...); // -d for something like "debug" or whatever
Triggers dpr() only if breakpoint was defined with dprb()

dprm($var : any, ...); // -m for "measure"
Prints all measures made with dprmFrom()/dprmTo() and then executes dpr() for passed arguments.

dprmFrom($key : string);
Starts execution time measure named as $key.

dprmTo($key : string);
Ends execution time measure named as $key.