Question

How to set a default value to function parameters in PHP

Answer 1

function add($a, $b = 12) {
    return $a + $b;
}

echo add(5, 3);

echo "\n";

echo add(3); 



/*
run:

8
15

*/

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Answer 2

function add($a = 8, $b = 12) {
    return $a + $b;
}

echo add(2, 5); 

echo "\n";

echo add(); 



/*
run:

7
20

*/

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