Blimey... That's going to take some de-ciphering... It looks fascinating :-) Thanks! Alan > -----Original Message----- > From: Jochem Maas [mailto:jochem@xxxxxxxxxxxxx] > Sent: 13 October 2005 20:53 > To: Alan Lord > Cc: php-general@xxxxxxxxxxxxx > Subject: Re: RE: Removing Items from an Array > > Alan Lord wrote: > > Hi TG and others, > > > > I think I must be missing something here. > > > > Your example doesn't seem to traverse "down" into a multidim array. > > > > Also, it appears as though your script assumes that the > structure of > > the array is known. It isn't and it is retrieved from "far > away" and I > > have no control over it's structure/depth/size etc... I can take a > > good guess at the keys I want to keep and keep those in an > array in my config.inc. > > But I would ideally like to be able to have a function which is as > > "array agnostic" as possible. > > shouldn't be 'array paragnostic' or maybe 'array gnostic' - > psychic hypertext processor. does what you mean. > > > > > I tried to do an "unset($arr[key])" in one of my other attempts at > > solving this problem. But from what I read in the manual (if I > > understood correctly :-)), it seems as though you can't > really do this > > from within a function/routine which is walking through the > array at > > that time as the array is not re-ordered... > > right so you have to write your own function. and/or maybe > combine it with > array_map() and/or array_filter() ... here is a routine that > drills into an array given an array of values that act as the 'path' > into the array your 'drilling' (can you handle php5?), may be > that inspires you a bit: > > /* > * eg > > $yourDataSet = array(); > $yourDataSet['A'] = array(); > $yourDataSet['B'] = array(); > $yourDataSet['A']['A'] = array(); > $yourDataSet['B']['B'] = array(); > $yourDataSet['B']['B']['coolstuff'] = array( > 'foo' => 'bar', > 'bar' => 'qux', > ); > > ArrayDriller::setSource( $yourDataSet ); $somedata = > ArrayDriller::get( array('B','B','coolstuff') ) > */ > > class ArrayDriller > { > static private $source; > > static public function setSource($var) > { > // do a check to make sure the keys are associative? > if (is_array($var) && count($var)) self::$source = $var; > } > > static public function set($varName, $value = null) > { > if (is_array(self::$source) && $varName && > !is_numeric($varName)) { > if (is_array( $varName )) { > $tmpArr =& self::$source; > while ( 1 ) { > self::chkVarName($k = array_shift( $varName )); > if ( !count( $varName )) { > return ($tmpArr[ $k ] = $value); > break; > } else if (! isset($tmpArr[ $k ]) || ! > is_array($tmpArr[ $k ])) { > $tmpArr[ $k ] = array(); > } > > $tmpArr =& $tmpArr[ $k ]; > } > } else { > self::chkVarName($varName); > return (self::$source[ $varName ] = $value); > } > } > } > > static public function get($varName) > { > if (is_array(self::$source) && $varName) { > if (is_array( $varName )) { > $tmpArr =& self::$source; > while ( 1 ) { > self::chkVarName($k = array_shift( $varName )); > > /* endpoint */ > if ( !count( $varName )) { > if (@is_array($tmpArr) && > array_key_exists($k, $tmpArr)) { > return $tmpArr[ $k ]; > } > break; > } > else if (!array_key_exists($k, $tmpArr) || > !is_array($tmpArr[ $k ])) > { > // we can go no deeper > break; > } > > $tmpArr =& $tmpArr[ $k ]; > } > } else { > self::chkVarName( $varName ); > if (array_key_exists($varName, self::$source)) { > return self::$source[ $varName ]; > } > } > } > > return null; > } > > static private function chkVarName($varName) > { > if (strval( $varName )) { > return; > } else { > throw new Exception('backup buster, call that an > assoc key?'); > // trigger_error(); // er? php4 anyone? > } > } > } > > > > > > Thanks and no offence intended, I am just trying to > understand... :-) > > > > Alan > > -- > > Tg wrote: > > > > That works just as well, if you have only two levels of > depth. Mostly > > I was trying to illustrate how to use $key => $value in a > foreach and > > what to do if you need to go multiple levels down. Once you get to > > the bottom level, then you can use isset() certainly. > > > > Just wanted to make sure that it was clear what to do with $key and > > $subkey relating to the main array ($alldataarr in this example) > > ---------snip----------------- > > > > -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
