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<?php function nums() { $ary = [24,25,26,27,28,29,30,31,32]; $times=1; for($x = 0, $max = count($ary); $x < $max; $x += 2) { echo "iterated for ",$times++," time(s)","\n"; $cmd = (yield $ary[$x]); // yield expr if ($cmd == 'stop') { echo 'Stopped and closed generator',"\n"; return; } } } $gen = nums(); $times = 1; foreach ($gen as $value) { echo "$value at iteration $times","\n"; $times++; if ($value == 28) { // don't let it get to 32 $gen->send('stop'); } }
Output for git.master, git.master_jit, rfc.property-hooks
iterated for 1 time(s) 24 at iteration 1 iterated for 2 time(s) 26 at iteration 2 iterated for 3 time(s) 28 at iteration 3 Stopped and closed generator

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