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<?php function a () { static $b = null; if (is_null($b)) { echo 'Doing work.'; $b = 'blop'; } return $b; } var_dump(a()); var_dump(a()); var_dump(a()); var_dump(a()); var_dump(a()); var_dump(a()); var_dump(a()); var_dump(a());
Output for git.master, git.master_jit, rfc.property-hooks
Doing work.string(4) "blop" string(4) "blop" string(4) "blop" string(4) "blop" string(4) "blop" string(4) "blop" string(4) "blop" string(4) "blop"

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