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<?php error_reporting(-1); function myCheckA($in) { return isset($in); } function myCheck($in) { global $$in; return isset($$in); } $var1='Something'; $var2='var1'; echo 'Set: ' . isset($$var2), "\n"; $var2='nope'; echo 'Set: ' . isset($$var2), "\n"; $var2='var1'; echo 'Set: ' . myCheck($$var2), "\n"; $var2='nope'; echo 'Set: ' . myCheck($$var2), "\n"; ?>
Output for git.master, git.master_jit, rfc.property-hooks
Set: 1 Set: Set: Warning: Undefined variable $nope in /in/7oiRS on line 27 Set:

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