How to pass variable number of arguments to a PHP function

Question

I have a PHP function that takes a variable number of arguments  using func num args   and func get args     but the number of arguments I want to pass the function depends on the length of an array  Is there a way to call a PHP function with a variable number of arguments

User · Answer

For those looking for a way to do this with $object->method:

call_user_func_array(array($object, 'method_name'), $array);

I was successful with this in a construct function that calls a variable method_name with variable parameters.

User · Answer

If you have your arguments in an array  you might be interested by the call user func array function   If the number of arguments you want to pass depends on the length of an array  it probably means you can pack them into an array themselves -- and use that one for the second parameter of call user func array   Elements of that array you pass will then be received by your function as distinct parameters    For instance  if you have this function    function test       var dump func num args       var dump func get args         You can pack your parameters into an array  like this     params   array    10     glop      test        And  then  call the function    call user func array  test    params     This code will the output    int 3  array   0   gt  int 10   1   gt  string  glop   length 4    2   gt  string  test   length 4    ie  3 parameters   exactly like iof the function was called this way    test 10   glop    test

User · Answer

I m surprised nobody here has mentioned simply passing and extracting an array  E g   function add  arr       extract  arr  EXTR REFS       return  one  two     one   1   two   2  echo add compact  one    two        3   Of course  this does not provide argument validation  For that  anyone can use my expect function  https   gist github com iautomation 8063fc78e9508ed427d5

User · Answer

You can just call it   function test                 print r func get args        test  blah    test  blah   blah      Output   Array    0     blah   Array    0     blah  1     blah

User · Answer

Here is a solution using the magic method   invoke   Available since php 5 3   class Foo       public function   invoke  method null   args              if  method               return call user func array   this   method    args                     return false             public function methodName  arg1   arg2   arg3              From inside same class    this  methodName     arg1    arg2    arg3       From an instance of an object    obj   new Foo   obj  methodName     arg1    arg2    arg3

User · Answer

An old question  I know  however  none of the answers here really do a good job of simply answer the question   I just played around with php and the solution looks like this   function myFunction  requiredArgument   optionalArgument    default       echo  requiredArgument    optionalArgument      This function can do two things   If its called with only the required parameter  myFunction  Hi   It will print  Hi default   But if it is called with the optional parameter  myFunction  Hi   me   It will print  Hi me    I hope this helps anyone who is looking for this down the road

User · Answer

Since PHP 5 6  a variable argument list can be specified with the     operator     function do something  first      all the others        var dump  first       var dump  all the others      do something  this goes in first   2  3  4  5      gt  string 18   this goes in first    gt    gt  array 4      gt     0   gt    gt    int 2    gt     1   gt    gt    int 3    gt     2   gt    gt    int 4    gt     3   gt    gt    int 5    gt      As you can see  the     operator collects the variable list of arguments in an array   If you need to pass the variable arguments to another function  the     can still help you   function do something  first      all the others        do something else  first      all the others          Which is translated to         do something else  this goes in first   2  3  4  5         Since PHP 7  the variable list of arguments can be forced to be all of the same type too   function do something  first  int     all the others

User · Answer

This is now possible with PHP 5 6 x  using the     operator  also known as splat operator in some languages    Example   function addDateIntervalsToDateTime  DateTime  dt  DateInterval     intervals         foreach    intervals as  interval              dt- gt add   interval              return  dt     addDateIntervaslToDateTime  new DateTime  new DateInterval   P1D              new DateInterval   P4D     new DateInterval   P10D

User · Answer

In a new Php 5 6  you can use     operator instead of using func get args     So  using this  you can get all the parameters you pass   function manyVars     params       var dump  params

[php] How to pass variable number of arguments to a PHP function

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