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<?php class Test { public function foo() { echo "I am only called once.\n"; return array('a', 'b', 'c', 'd', 'e'); } public function count($arr) { echo "I am only called once.\n"; return count($arr); } } $test = new Test(); foreach ($test->foo() as $value) { echo $value . "\n"; } $arr = array(1,2,3,4,5); for($i=0; $i < $test->count($arr); ++$i) { echo $arr[$i] . "\n"; }
Output for git.master, git.master_jit, rfc.property-hooks
I am only called once. a b c d e I am only called once. 1 I am only called once. 2 I am only called once. 3 I am only called once. 4 I am only called once. 5 I am only called once.

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