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Asked 1 years ago
26 Apr 2023
Views 2338
Cimb

Cimb posted

PHP - Error : Deprecated: Optional parameter declared before required parameter

PHP - Error : Deprecated: Optional parameter $v1 declared before required parameter $v2 is implicitly treated as a required parameter in


public function increaseQvote($v1='',$v2){
//other code here 
}
sachin

sachin
answered Apr 27 '23 00:00

the error message " Deprecated: Optional parameter declared before required parameter " indicates that a function or method has an optional parameter defined before a required parameter. This can cause issues with the function's behavior and can result in unexpected errors.

To solve this error, you should move the optional parameter(s) to the end of the parameter list , after all required parameters. For example, let's say you have a function that takes two parameters, where the second parameter is optional:



function myFunction($requiredParam, $optionalParam = null) {
  // function body
}

If you try to add another required parameter before the optional parameter like this:



function myFunction($requiredParam1, $requiredParam2, $optionalParam = null) {
  // function body
}

You will get the "Deprecated: Optional parameter declared before required parameter" error.

To solve this, simply move the optional parameter to the end of the parameter list, like this:



function myFunction($requiredParam1, $requiredParam2, $optionalParam = null) {
  // function body
}

By doing this, you will avoid the error and ensure that the function works as expected.
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