If I have an array like this:
$array = array('something'=>array('more'=>array('id'=> 34)));
Then print_r($array['something']['more']['id'] works fine.
But say the key names might change but the structure wont. How could I reference the same values without knowing the names?
I thought maybe print_r($array[0][1][2] might work, but of course those keys don't exist.
You can use a foreach statement. Use a recursive function to handle nested arrays (untested):
public function iterateNestedArray($array) {
if (is_array($array)) {
foreach ($array as $key => $value) {
print_r(iterateNestedArray($value));
}
}
else {
return $array;
}
}
You might consider implementing this function with a second argument to pass a callback function, rather than just print_ring every value.
There are multiple possibilities.
You could use arrayiterator or simply foreach. Perhaps even array_values could be your solution.
you can do a straight loop with foreach, although it's fairly ugly:
foreach ( $grandparent as $gpkey => $parent ) {
foreach ( $parent as $pkey => $child ) {
foreach ( $child as $ckey => $value ) {
print $gpkey . " - " . $pkey . " - " . $ckey . " = " . $value;
}
}
}
Or you can get the list of keys with array_keys():
$keys = array_keys($array);
for ( $i=0, $imax=count($keys); $i<$imax; $i++ ) {
print $key . " = " . $array[$key];
}
You can use reset(), next() and end() as always
$array = array('something'=>array('more'=>array('id'=> 34)));
echo reset(reset(reset($array)));
reset accepts a reference, therefore reset(reset()) is invalid (references must be variables; expressions, like function calls, are not accepted).