Re: Re: dynamic object instances

From: Date: Thu, 11 Aug 2005 00:58:48 +0000
Subject: Re: Re: dynamic object instances
References: 1 2 3 4  Groups: php.general 
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Eli wrote:
Thomas Angst wrote: Thanks for you answer, but sorry, I do not understand your hint. I tried this code: class test { var $txt; function test($txt) { $this->txt = $txt; } function out() { echo $this->txt; } } $obj = call_user_func_array(array('test', 'test'), array('foobar')); $obj->out(); But I'm getting an error while accessing the $this pointer in the constructor. This will not work, since it is like calling a static class method, and $this is not allowed to be used in static methods. I solved this with eval() function. <? $obj_eval="return new $class("; for ($i=0; $i<count($args); $i++) $obj_eval.="\$args[$i],"; $obj_eval=substr($obj_eval,0,-1).");"; $obj=eval($obj_eval); ?>
I believe that this is the kind of clever, evil stuff the OP was trying to avoid... (evil - eval :-) - besides eval is very slow - not something you (well me then) want to use in a function dedicated to object creation which is comparatively slow anyway (try comparing the speed of cloning and creating objects in php5 for instance regardless - nice one for posting this Eli - I recommend anyone who doesn't understand what he wrote to go and figure it out, good learning material :-)


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