I'm still trying to get my head around all the OOP stuff and was
wondering if there is any basic difference between calling a static
function as opposed to creating an object, in situations where both
methods will do the same thing for you. Is there any overhead to
creating an object from a class that might impact time/memory
consumption(efficiency), or does PHP treat these two methods the
same? I'm currently working with PHP4 but am also curious as to how
it works in PHP5.
I.E.:
<pseudoCode>
class Foo {
var $_vars = array();
function &setVar1($var) {
static $localVars = array();
if (!empty($localVars[$var])) {
return $localVars[$var];
} else {
$localVars[$var] =& new $var();
return $localVars[$var];
}
}
function &setVar2($var) {
if (!empty($this->_vars[$var])) {
return $this->_vars[$var];
} else {
$this->_vars[$var] =& new $var();
return $this->_vars[$var];
}
}
}
$result1 =& Foo::setVar1('something');
$bar = new Foo();
$result2 =& $bar->setVar2('something');
</pseudoCode>
Right now I'm working on an object controller type of class, but I
can see where I might run into this situation in other areas where
storing a value in a static function variable or a class variable
would accomplish much the same thing as far as the calling code is
concerned.
Any thoughts?
Ed
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