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<?php function a () { function b() { echo "I am b.\n"; } echo "I am a.\n"; } echo function_exists("b") ? "b is defined\n" : "b is not defined"; a(); echo function_exists("b") ? "b is defined\n" : "b is not defined"; b();
Output for git.master, git.master_jit, rfc.property-hooks
b is not definedI am a. b is defined I am b.

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