How to Fix PHP\'s Deprecated Call-Time Pass-by-Reference Warning?

DEPRECATED CALL-TIME PASS-BY-REFERENCE IN PHP

A warning has been encountered regarding call-time pass-by-reference, which has been deprecated. This means that the following lines of code are causing the warning:

function XML() {
    $this->parser = &xml_parser_create();
    xml_parser_set_option(&$this->parser, XML_OPTION_CASE_FOLDING, false);
    xml_set_object(&$this->parser, &$this);
    xml_set_element_handler(&$this->parser, 'open','close');
    xml_set_character_data_handler(&$this->parser, 'data');
}

Explanation of the Deprecation

Call-time pass-by-reference allows simulating the behavior of passing arguments by reference when they are passed by value. However, this is no longer necessary or recommended.

Additionally, passing objects by reference is also no longer necessary as objects are always modified when passed to functions.

How to Fix the Warning

To resolve the warning, simply remove the & symbols from the variable references. The code should be modified as follows:

function XML() {
    $this->parser = xml_parser_create();
    xml_parser_set_option($this->parser, XML_OPTION_CASE_FOLDING, false);
    xml_set_object($this->parser, $this);
    xml_set_element_handler($this->parser, 'open','close');
    xml_set_character_data_handler($this->parser, 'data');
}

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