Iterating Through References

[Anon]

When I iterate through an array of objects, that iteration seems to create copies of my objects, such that this doesn't work:

foreach ($objarray as $obj) {
$obj->method();
}

ie; method is applied to a copy, not an original. I have searched high and low and can't figure out how to iterate through originals. Also, I'm looking for a warning system so I know when PHP copies an object -- in my design, object copying should never happen.

[Anon]

PHP almost always passes by value, rather than by reference.

You might see if array_map or array_filter work for you. Generally speaking, native code is faster than scripted code 🙂

Or if you want a manual loop
foreach(keys($objarray) as $key)
{ $objarray[$key]->method();
}

should work for any sort of array, but if your $objarray is indexed and it doesn't, then

for($i=0; $i<count($objarray); ++$i)
{ $objarray[$i]->method();
}

oughta.

See also the PHP manual on references - it probably knows more about this bit of the langauge than I do 🙂