What does the warning "Call-time pass-by-reference has been deprecated" mean in PHP and how can it be resolved?

The warning "Call-time pass-by-reference has been deprecated" in PHP means that passing arguments by reference using the '&' symbol during function calls is no longer supported in newer versions of PHP. To resolve this issue, you should remove the '&' symbol from the function call and update the function definition to accept the argument by reference. 

// Before
function myFunction(&$arg) {
    // function logic
}

$var = 10;
myFunction(&$var); // Deprecated call-time pass-by-reference

// After
function myFunction(&$arg) {
    // function logic
}

$var = 10;
myFunction($var); // Correct way to pass argument by reference

Keywords

Call-time pass-by-reference deprecated PHP warning resolution

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