apd_set_session
I had the same problem and, since the __overriden__() name is hardcoded, I simply ended up renaming that one. I use it like this:
<?php
function _dbslayer_map()
{
$substs = array(
'mysql_connect' => 'dbslayer_mysql_connect($host, $user, $pass, $new_link, $client_flags)',
'mysql_fetch_array' => 'dbslayer_mysql_fetch_array($result, $result_type)',
'mysql_query' => 'dbslayer_mysql_query($query, $link_identifier)'
);
$args = array(
'mysql_connect' => '$host = NULL, $user = NULL, $pass = NULL, $new_link = false, $client_flags = 0',
'mysql_fetch_array' => '&$result, $result_type = MYSQL_BOTH',
'mysql_query' => '$query, $link_identifier = DEFAULT_LINK'
);
foreach ($substs as $func => $ren_func) {
override_function($func, $args[$func], "return $substs[$func];");
rename_function("__overridden__", $ren_func);
}
}
?>
So far, so good.
override_function
(PECL apd >= 0.2)
override_function — Surcharge les fonctions intégrées
Description
bool override_function
( string
$function_name
, string $function_args
, string $function_code
)override_function() surcharge les fonctions intégrées (les remplace dans la table des symboles).
Liste de paramètres
-
function_name -
La fonction à surcharger.
-
function_args -
Les arguments de la fonction, séparés par une virgule.
Habituellement, vous voudriez passer ce paramètre, tout comme le paramètre
function_code, délimité par un guillemet simple. La raison pour laquelle on utilise un guillemet simple est pour protéger le nom de la variable lors de l'analyse, sinon, si vous utilisez des guillemets doubles, il devient nécessaire d'échapper le nom de la variable, e.g. \$votre_variable. -
function_code -
Le nouveau code pour la fonction.
Valeurs de retour
Cette fonction retourne TRUE en cas de
succès ou FALSE si une erreur survient.
Exemples
Exemple #1 Exemple avec override_function()
<?php
override_function('test', '$a,$b', 'echo "DOING TEST"; return $a * $b;');
?>
add a note
User Contributed Notes
override_function
taher at unixwars dot com
28-Nov-2008 08:08
pagan at o2 dot pl
24-Oct-2008 12:34
There is not chance to override 2 or more functions, because of the error:
Fatal error: Cannot redeclare __overridden__()
rojaro at gmail dot com
20-Sep-2005 12:13
Since Apache 1 & 2 use diffrent methods (Unicode vs. UTF8) on Win32 platforms to encode urls, i've implemented the following workaround to get around this "bug" (which is actually known behaviour and wont get fixed). This workaround is really usefull when writing PHP scripts which have to work on all platforms (Windows, Linux, BSD etc.), must process URLs and must work under both Apache versions.
<?php
$httpd = explode(' ', $_SERVER['SERVER_SOFTWARE']);
if(substr($httpd[0], 0, 6)=='Apache' && substr($httpd[0], 7, 1)==2 && $httpd[1]=='(Win32)')
{
if(isset($_SERVER['REQUEST_URI'])) $_SERVER['REQUEST_URI'] = str_replace('%2F', '/', rawurlencode(utf8_decode(rawurldecode($_SERVER['REQUEST_URI']))));
if(isset($_SERVER['REDIRECT_URL'])) $_SERVER['REDIRECT_URL'] = str_replace('%2F', '/', rawurlencode(utf8_decode(rawurldecode($_SERVER['REDIRECT_URL']))));
override_function('urlencode', '$url', 'return str_replace("%2F", "/", rawurlencode(utf8_encode($url)));');
}
?>
php at undeen dot com
10-Mar-2005 12:07
I thought the example was not very helpful, because it doesn't even override the function with another function.
My question was: If I override a function, can I call the ORIGINAL function within the OVERRIDING function?
ie, can I do this:
<?php
override_function('strlen', '$string', 'return override_strlen($string);');
function override_strlen($string){
return strlen($string);
}
?>
The answer: NO, you will get a segfault.
HOWEVER, if you use rename_function to rename the original function to a third name, then call the third name in the OVERRIDING function, you will get the desired effect:
<?php
rename_function('strlen', 'new_strlen');
override_function('strlen', '$string', 'return override_strlen($string);');
function override_strlen($string){
return new_strlen($string);
}
?>
I plan to use this functionality to generate log reports every time a function is called, with the parameters, time, result, etc... So to wrap a function in logging, that was what I had to do.