By default, PHP variables are passed by value as the function arguments in PHP. Following is an example of how do you pass a variable by value.
1 2 3 4 5 6 7 8 9 10 11 12 13 | /** * Pass a variable by value. */ function add_some_extra(&$string) { $string .= 'and something extra.'; } $str = 'This is a string, '; add_some_extra($str); // outputs 'This is a string, and something extra.' echo $str; |
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