PHP method analysis: How to output two values?

PHP method analysis: How to output two values?

In PHP, sometimes we need to output multiple values ​​from a method. In this case, we can use arrays, objects, or reference passing to achieve this. Three methods to output two values ​​will be introduced below.

Method 1: Return an array

function getTwoValues(){
    $value1 = 10;
    $value2 = 20;
    
    return [$value1, $value2];
}

list($result1, $result2) = getTwoValues();
echo $result1; // 输出 10
echo $result2; // 输出 20

Method 2: Return an object

class TwoValues{
    public $value1;
    public $value2;
    
    function __construct($v1, $v2){
        $this->value1 = $v1;
        $this->value2 = $v2;
    }
}

function getTwoValues(){
    $value1 = 10;
    $value2 = 20;
    
    return new TwoValues($value1, $value2);
}

$result = getTwoValues();
echo $result->value1; // 输出 10
echo $result->value2; // 输出 20

Method 3: Pass by reference

function getTwoValues(&$value1, &$value2){
    $value1 = 10;
    $value2 = 20;
}

getTwoValues($result1, $result2);
echo $result1; // 输出 10
echo $result2; // 输出 20

Whether using array, Whether passed by object or reference, it is easy to output two values. Which method to choose depends on the actual needs. I hope the above methods can be helpful to you.

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