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<?php const BACK_OFF_SCALE_FACTOR = 1; function get_back_off_sleep_time(&$int_back_off_multiplier) { if ($int_back_off_multiplier++) { return BACK_OFF_SCALE_FACTOR * pow(2, $int_back_off_multiplier - 1); } return 0; } $foo = 0; for ($i = 0; $i < 10; $i++) { echo get_back_off_sleep_time($foo), "\n"; }
Output for git.master, git.master_jit, rfc.property-hooks
0 2 4 8 16 32 64 128 256 512

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