note 70502 added to function.array-slice

I was trying to pass an argument list through the constructors. I tried various things such as func_get_args(). My conclusion is to pass the args to the constructor as an array. Each constructor can remove the fields it wants and pass the array on. Using the following prototype, each child class can have any number of parameters added to the beginning of the class constructor and the rest passed onto the parent. If the default value is desired for an argument, just pass NULL. This could possibly be better done with array_shift or the like. <?php class aChild extends aParent { // TODO customise this list for this class public $a, $b, $c; function __construct( $args = array() ) { //set up default values for this class // TODO customise this list for this class $default = array( "a-def", "b-def", "c-def" ) ; // now overwrite the default with non NULL args foreach( $args as $key=>$val ) { // more args than needed? if( !isset( $default[$key] ) ) { break; } // this arg not null if( isset( $val ) ) { $default[$key] = $val ; } } // set this to the new values // TODO customise this list for this class list( $this->a, $this->b, $this->c ) = $default ; // take off the ones we used $args = array_slice( $args, count( $default ) ) ; parent::__construct( $args ) ; } } $x = new aChild( array( "aChild a", NULL, "aChild c", NULL, "aParent second", "aParent third" ) ) ; ?> ---- Server IP: 203.220.0.234 Probable Submitter: 220.237.187.216 ---- Manual Page -- http://www.php.net/manual/en/function.array-slice.php Edit -- https://master.php.net/note/edit/70502 Del: integrated -- https://master.php.net/note/delete/70502/integrated Del: useless -- https://master.php.net/note/delete/70502/useless Del: bad code -- https://master.php.net/note/delete/70502/bad+code Del: spam -- https://master.php.net/note/delete/70502/spam Del: non-english -- https://master.php.net/note/delete/70502/non-english Del: in docs -- https://master.php.net/note/delete/70502/in+docs Del: other reasons-- https://master.php.net/note/delete/70502 Reject -- https://master.php.net/note/reject/70502 Search -- https://master.php.net/manage/user-notes.php