PHP Functions

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Syntax

  • function func_name($parameterName1, $parameterName2) { code_to_run(); }
  • function func_name($optionalParameter = default_value) { code_to_run(); }
  • function func_name(type_name $parameterName) { code_to_run(); }
  • function &returns_by_reference() { code_to_run(); }
  • function func_name(&$referenceParameter) { code_to_run(); }
  • function func_name(...$variadicParameters) { code_to_run(); } // PHP 5.6+
  • function func_name(type_name &...$varRefParams) { code_to_run(); } // PHP 5.6+
  • function func_name() : return_type { code_To_run(); } // PHP 7.0+


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