I was experiencing problems using this function on a script. I discovered through trial and error that you CANNOT reload a function (or method of a class) if it has been called (e.g, its present in the debug_backtrace). Also you cannot redeclare a function that is used by set_error_handler.
The reasons are logical, but it took me a good 2 days of debugging to find it, hope this saves someone a headache.
runkit_import
(No version information available, might only be in Git)
runkit_import — Procesar un archivo PHP importando definiciones de funciones y clases, sobrescribiendo cuando sea apropiado
Descripción
Similar a include, sin embargo cualquier código que resida fuera
de una función o clase es simplemente ignorado.
Además, dependiendo del valor de flags,
cualquier función o clase ya existente en el entorno de ejecución actual
podría ser sobrescrito automáticamente por sus nuevas definiciones.
Parámetros
filename-
El nombre de archivo desde que se va a importar las definiciones de funciones y clases
flags-
Operador OR a nivel de bit de la familia de constantes
RUNKIT_IMPORT_*.
Ejemplos
Ejemplo #1 Ejemplo de runkit_import()
<?php
// importar clases completamente
runkit_import('myfile.inc', RUNKIT_IMPORT_CLASSES);
/* importar clases, aunque no importar sus propiedades estáticas
(RUNKIT_IMPORT_CLASS_STATIC_PROPS está disponible desde 1.0.1) */
runkit_import('myfile.inc', RUNKIT_IMPORT_CLASSES & ~RUNKIT_IMPORT_CLASS_STATIC_PROPS);
/* importar solamente las propiedades estáticas de las clases
(RUNKIT_IMPORT_CLASS_STATIC_PROPS está disponible desde 1.0.1) */
runkit_import('myfile.inc', RUNKIT_IMPORT_CLASS_STATIC_PROPS);
?>
add a note
User Contributed Notes 6 notes
bbisgod [at] gmail [dot] com ¶
18 years ago
dabbers ¶
15 years ago
It appears that this function still doesn't remove the previous class. I'm not sure what it does to it, but looking at memory usage, it only goes up instead of staying the same or going down (This was when I reloaded a class that was exactly the same).
So that might be something to fix, unless I'm doing something wrong.
Maxdamantus ¶
16 years ago
In reply to the comment made by info at lucasvd dot nl:
Runkit WILL reload classes, but the runkit_import must be called from inside an other class or object to do so.
<?php
class reload{
function __construct($file){
runkit_import($file);
}
}
new reload("myclassfile.php");
?>
info at lucasvd dot nl ¶
17 years ago
Note that reloading classes does not work, when you're using this extension on the PHP Command Line Interface.
php at ransico dot com ¶
17 years ago
When using this function to override an existing class, you need to be careful in cases where the new definition 'extends' another class - it won't work.
For example,
<?php
// File 1
class BaseCls { }
class TestCls extends BaseCls {
function hi () { echo "Hi"; }
}
runkit_import('test2.php');
?>
<?php
// File 2
class TestCls extends BaseCls {
function hi () { echo "Hi again!"; }
}
?>
will NOT work. In file two, you need to omit the 'extends BaseCls'. Note however, that anything from BaseCls will still be in TestCls since it was defined originally in file 1.
From what I can tell, runkit_import defines and overwrites elements - however it does not delete.
bbisgod [at] gmail [dot] com ¶
18 years ago
Heres a nice function to reload the whole program, note, requires PHP5.1:
<?php
function reload() {
$files = get_included_files();
foreach($files as $file) {
if (runkit_lint_file($file)) {
runkit_import($file);
} else {
return false;
}
}
}
?>
