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Function and Method Cross Reference

is_callable()

This function is provided by PHP directly.
You can lookup the documentation for it here:
  [php.net] [us2.php.net] [uk.php.net] [au.php.net] [de.php.net]

Referenced 24 times:

Generated: Sat Nov 22 03:37:02 2014 Cross-referenced by PHPXref 0.7