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 — Override توابع داخل-ساخت
Description
bool override_function
( string $function_name
, string $function_args
, string $function_code
)
Override توابع داخل ساخت با جایگزینی آنها در جدول نشانهها.
Parameters
- function_name
-
تابع برای override.
- function_args
-
آرگومانهای تابع به صورت رشته جدا شده توسط کاما.
شما عموما این پارامتر را همراه با پارامتر function_code به عنوان یک رشته جدا شده توسط ' میفرستید تا از نام متغیرها در برابر ترجمه محافظت کنید، در غیر این صورت اگر از " استفاده کنید از نام متغیرها باید عبور کنید به عنوان مثال \$your_var.
- function_code
-
کد جدید برای تابع.
Return Values
Returns TRUE on success or FALSE on failure.
Examples
Example #1 مثال override_function()
<?php
override_function('test', '$a,$b', 'echo "DOING TEST"; return $a * $b;');
?>
add a note
User Contributed Notes
override_function - [4 notes]
taher at unixwars dot com ¶
4 years ago
pagan at o2 dot pl ¶
4 years ago
There is not chance to override 2 or more functions, because of the error:
Fatal error: Cannot redeclare __overridden__()
rojaro at gmail dot com ¶
7 years ago
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 ¶
8 years ago
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.