filtering xdebug ini keys

[jemptymethod]

I've created the following function for returning only ini keys that
pertain to xdebug. I'm wondering how I might go about doing the same
sort of thing with one or more of the various "array_" functions
instead (e.g. array_filter). Since I'm working with xdebug (if you
can't tell ;) I'll respond in kind with trace data comparing the
functions.

Thanks in advance....George Jempty

function ini_get_xdebug() {
$ini_all = ini_get_all();
$ini_xdebug = array();
$xdebug_prefix = 'xdebug.';

foreach ($ini_all as $k=>$v) {
if (substr($k, 0, strlen($xdebug_prefix)) == $xdebug_prefix) {
$ini_xdebug[substr($k, strlen($xdebug_prefix))] = $v;
}
}
return $ini_xdebug;
}

[jemptymethod]

On Oct 28, 8:53 am, jemptymethod <[e-mail]:

I've created the following function for returning only ini keys that
pertain to xdebug. I'm wondering how I might go about doing the same
sort of thing with one or more of the various "array_" functions
instead (e.g. array_filter). Since I'm working with xdebug (if you
can't tell ;) I'll respond in kind with trace data comparing the
functions

Interesting trace data already....by moving the calls to
strlen($xdebug_prefix) outside the loop, I reduce execution time from
over 15 milliseconds to under 10

Thanks in advance....George Jempty

function ini_get_xdebug() {
$ini_all = ini_get_all();
$ini_xdebug = array();
$xdebug_prefix = 'xdebug.';

foreach ($ini_all as $k=>$v) {
if (substr($k, 0, strlen($xdebug_prefix)) == $xdebug_prefix) {
$ini_xdebug[substr($k, strlen($xdebug_prefix))] = $v;
}
}
return $ini_xdebug;
}

[Rik Wasmus]

On Sun, 28 Oct 2007 13:53:34 +0100, jemptymethod <je**********@gmail.com
wrote:

I've created the following function for returning only ini keys that
pertain to xdebug. I'm wondering how I might go about doing the same
sort of thing with one or more of the various "array_" functions
instead (e.g. array_filter). Since I'm working with xdebug (if you
can't tell ;) I'll respond in kind with trace data comparing the
functions.

Thanks in advance....George Jempty

function ini_get_xdebug() {
$ini_all = ini_get_all();
$ini_xdebug = array();
$xdebug_prefix = 'xdebug.';

foreach ($ini_all as $k=>$v) {
if (substr($k, 0, strlen($xdebug_prefix)) == $xdebug_prefix) {
$ini_xdebug[substr($k, strlen($xdebug_prefix))] = $v;
}
}
return $ini_xdebug;
}

What you should be doing:

$ini_xdebug = ini_get_all('xdebug');

To answer your question, something like (untested):

<?php
function _is_xdebug($string){
return preg_match('/^xdebug/i',$string);
}
$all = ini_get_all();
$keys = array_keys($all);
$neededkeys = array_filter($keys,'_is_xdebug');
$xdebug = array_intersect_key($all,array_flip($neededkeys));
?>
--
Rik Wasmus

[jemptymethod]

On Oct 28, 9:28 am, "Rik Wasmus" <[e-mail]:

>
To answer your question, something like (untested):

<?php
function _is_xdebug($string){
return preg_match('/^xdebug/i',$string);}

$all = ini_get_all();
$keys = array_keys($all);
$neededkeys = array_filter($keys,'_is_xdebug');
$xdebug = array_intersect_key($all,array_flip($neededkeys));
?>

For "untested" that worked out of the box ;) Thanks very much for the
lesson on how to use these array_ functions.

My very first trace however indicates 17 milliseconds. And replacing
the regular expression with 0===strpos($string, 'xdebug') didn't even
save a 10th of a millisecond (0.016824 vs. 0.016918).