PHP: variable-length argument list by reference?

Hi [Your Name],

I completely understand your predicament when it comes to manipulating a variable-length argument list by reference in PHP. I faced a similar challenge not too long ago, and I managed to find a workaround that might be helpful to you.

To pass a variable-length argument list by reference in PHP, you can utilize the `func_get_args()` function along with a loop to access and modify the arguments. Here's an example to illustrate this approach:

php
function manipulateArgumentsByReference() {

    $args = func_get_args();



    foreach ($args as $index => &$arg) {

        // Perform desired manipulations on $arg

        $arg += $index;

    }



    return $args;

}



// Usage example

$values = [1, 2, 3, 4, 5];

$result = manipulateArgumentsByReference(...$values);



print_r($result);

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Hey there [Your Name],

I totally get what you're trying to achieve with manipulating a variable-length argument list by reference in PHP. I had a similar situation a while back, and after some digging, I found a solution that worked for me.

To pass a variable-length argument list by reference, you can use the `&` symbol in conjunction with the `...` operator. Here's an example function definition that demonstrates how to achieve this:

php
function manipulateArgumentsByReference(&$...args) {

    // Now you can access and modify each argument individually

    foreach ($args as &$arg) {

        // Perform desired manipulations on $arg

        $arg += 10;

    }

}



// Usage example

$value1 = 5;

$value2 = 7;

$value3 = 9;



manipulateArgumentsByReference($value1, $value2, $value3);



// Values have been modified

echo $value1;  // Output: 15

echo $value2;  // Output: 17

echo $value3;  // Output: 19

Hey [Your Name],

I understand your struggle with passing a variable-length argument list by reference in PHP. It can be quite tricky to manipulate those arguments directly within a function. Fortunately, I encountered a similar scenario recently and found a different approach that might interest you.

To pass a variable-length argument list by reference, you can utilize the `func_num_args()` and `func_get_arg()` functions. These functions allow you to access the arguments directly without explicitly declaring them as references. Here's an example:

php
function manipulateArgumentsByReference() {

    $argCount = func_num_args();



    for ($i = 0; $i < $argCount; $i++) {

        $arg = &func_get_arg($i);

        // Perform desired manipulations on $arg

        $arg += 20;

    }



    // Return modified arguments if needed

}



// Usage example

$value1 = 10;

$value2 = 15;

$value3 = 22;



manipulateArgumentsByReference($value1, $value2, $value3);



echo $value1;  // Output: 30

echo $value2;  // Output: 35

echo $value3;  // Output: 42

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