Testing Traits

test_trait.php

<?php

class baseClass {

	protected function protfunc() { 	
		return "protBase";
	}
	
	public function pubfunc() {
		return "pubBase";
	}
	public function chainProt() {
		return $this->protfunc() . "\n";
	}
	public function chainPub() {
		return $this->pubfunc() . "\n";
	}
}

trait myTrait {
	protected function protfunc() {
		return "protTrait";
	}
	public function pubfunc() {
		return "pubTrait";
	}
}

class childClass extends baseClass {
	use myTrait;
}

$base = new baseClass();
print "Base:\n";
print $base->chainProt();
print $base->chainPub();
$child = new childClass();
print "Child:\n";
print $child->chainProt();
print $child->chainPub();

This prints:
Base: protBase pubBase Child: protTrait pubTrait

So the Trait can override both public and protected functions. When the parent chain function is called, it resolves the correct protected function.