By removing the ability to include the reference sign on function calls where have noticed that reference parameters can not be assigned a default value. PHP Call By Value for beginners and professionals with examples, php file, php session, php date, php array, php form, functions, time, xml, ajax, php mysql. It's by value according to the PHP Documentation. By default, function arguments are So, if I use call by reference then, will there be some performance wise benefit??? (keeping the array values unchanged during the whole. Yasser Souri 1, 1 12 LinkBack LinkBack URL About LinkBacks. Dieses Forum ist sowohl für ANFÄNGER als auch für PHP-Profis! The comment by tnestved at yahoo dot com is incorrect as it is based purely on perception and not architecture. Sometimes we need functions for building or modifying arrays whose elements are to be references to other variables arrays or objects for instance. Inside of the function, we're adding ten to the value of the variable. It looks like you were trying to swap references. NET Core Using Visual Studio Code. Diese allein ist ausreichend, um das Argument per Referenz zu übergeben. To pass by reference means we can modify the variables that are seen by the caller. Log In Sign Up.