Asked  7 Months ago    Answers:  5   Viewed   35 times

What's the easiest way to profile a PHP script?

I'd love tacking something on that shows me a dump of all function calls and how long they took but I'm also OK with putting something around specific functions.

I tried experimenting with the microtime function:

$then = microtime();
myFunc();
$now = microtime();

echo sprintf("Elapsed:  %f", $now-$then);

but that sometimes gives me negative results. Plus it's a lot of trouble to sprinkle that all over my code.

 Answers

61

The PECL APD extension is used as follows:

<?php
apd_set_pprof_trace();

//rest of the script
?>

After, parse the generated file using pprofp.

Example output:

Trace for /home/dan/testapd.php
Total Elapsed Time = 0.00
Total System Time  = 0.00
Total User Time    = 0.00


Real         User        System             secs/    cumm
%Time (excl/cumm)  (excl/cumm)  (excl/cumm) Calls    call    s/call  Memory Usage Name
--------------------------------------------------------------------------------------
100.0 0.00 0.00  0.00 0.00  0.00 0.00     1  0.0000   0.0009            0 main
56.9 0.00 0.00  0.00 0.00  0.00 0.00     1  0.0005   0.0005            0 apd_set_pprof_trace
28.0 0.00 0.00  0.00 0.00  0.00 0.00    10  0.0000   0.0000            0 preg_replace
14.3 0.00 0.00  0.00 0.00  0.00 0.00    10  0.0000   0.0000            0 str_replace

Warning: the latest release of APD is dated 2004, the extension is no longer maintained and has various compability issues (see comments).

Wednesday, March 31, 2021
 
muaaz
answered 7 Months ago
61

Here is a source:

  • Detect Mobile Browser
  • Download PHP script

Code:

<?php

$useragent=$_SERVER['HTTP_USER_AGENT'];

if(preg_match('/(android|bbd+|meego).+mobile|avantgo|bada/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)/|plucker|pocket|psp|series(4|6)0|symbian|treo|up.(browser|link)|vodafone|wap|windows (ce|phone)|xda|xiino/i',$useragent)||preg_match('/1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw-(n|u)|c55/|capi|ccwa|cdm-|cell|chtm|cldc|cmd-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc-s|devi|dica|dmob|do(c|p)o|ds(12|-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(-|_)|g1 u|g560|gene|gf-5|g-mo|go(.w|od)|gr(ad|un)|haie|hcit|hd-(m|p|t)|hei-|hi(pt|ta)|hp( i|ip)|hs-c|ht(c(-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i-(20|go|ma)|i230|iac( |-|/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |/)|klon|kpt |kwc-|kyo(c|k)|le(no|xi)|lg( g|/(k|l|u)|50|54|-[a-w])|libw|lynx|m1-w|m3ga|m50/|ma(te|ui|xo)|mc(01|21|ca)|m-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|-([1-8]|c))|phil|pire|pl(ay|uc)|pn-2|po(ck|rt|se)|prox|psio|pt-g|qa-a|qc(07|12|21|32|60|-[2-7]|i-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55/|sa(ge|ma|mm|ms|ny|va)|sc(01|h-|oo|p-)|sdk/|se(c(-|0|1)|47|mc|nd|ri)|sgh-|shar|sie(-|m)|sk-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h-|v-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl-|tdg-|tel(i|m)|tim-|t-mo|to(pl|sh)|ts(70|m-|m3|m5)|tx-9|up(.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|yas-|your|zeto|zte-/i',substr($useragent,0,4)))

header('Location: http://detectmobilebrowser.com/mobile');

?>
Wednesday, March 31, 2021
 
PedroKTFC
answered 7 Months ago
47

A clean way is to use strtotime()

$date = strtotime("+1 day", strtotime("2007-02-28"));
echo date("Y-m-d", $date);

Will give you the 2007-03-01

Wednesday, March 31, 2021
 
lechup
answered 7 Months ago
33

xdebug generates cachegrind files, so you will likely want to avoid that. I currently use XHProf http://mirror.facebook.net/facebook/xhprof/doc.html as it includes a great web interface for seeing profiling results.

Friday, May 28, 2021
 
Owen
answered 5 Months ago
50

If you want to do operations on what is returned by microtime, you have to set the "get as float" parameter to true (it defaults to false).

http://www.php.net/manual/en/function.microtime.php

$now = microtime(true);
for (...) {
    // do something
    echo microtime(true) - $now;
    $now = microtime(true);
}
Monday, September 13, 2021
 
BamBamBeano
answered 2 Months ago
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