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<?php class A { function foo() { if (isset($this)) { echo '$this is defined ('; echo get_class($this); echo ")\n"; } else { echo "\$this is not defined.\n"; } } } // this will print '$this is defined (A)' $a = new A(); $a->foo();
Output for git.master, git.master_jit, rfc.property-hooks
$this is defined (A)

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