array-key

I have a string that will be exploded to get an array, and as we know, the output array key will start from 0 as the key to the first element, 1 for the 2nd and so on. Now how to force that array to start from 1 and not 0? It's very simple for a typed array as we can write it like this: array('1'=>'value', 'another value', 'and another one'); BUT for an array that is created on the fly using explode, how to do it? Thanks. $exploded = explode('.', 'a.string.to.explode'); $exploded = array_combine(range(1, count($exploded)), $exploded); var_dump($exploded); Done! Just use a separator to create a

I want to be able to retrieve the value of an array by using the numeric key. The catch is that if the key is beyond the array length, I need it to loop through the array again. $my_array = array('zero','one','two','three','four','five','six','seven'); function loopArrayValues($array,$key){ //this is what is needed to return return } echo "Key 2 is ".loopArrayValues($my_array,2)."<br />"; echo "Key 11 is ".loopArrayValues($my_array,11)."<br />"; echo "Key 150 is ".loopArrayValues($my_array,11)."<br />"; Expected output: Key 2 is two Key 11 is three Key 150 is three My research references:

I have an array like below $old = array( 'a' => 'blah', 'b' => 'key', 'c' => 'amazing', 'd' => array( 0 => 'want to replace', 1 => 'yes I want to' ) ); I have another array having keys to replace with key information. $keyReplaceInfoz = array('a' => 'newA', 'b' => 'newB', 'c' => 'newC', 'd' => 'newD'); I need to replace all keys of array $old with respective values in array $keyReplaceInfo . Output should be like this $old = array( 'newA' => 'blah', 'newB' => 'key', 'newC' => 'amazing', 'newD' => array( 0 => 'want to replace', 1 => 'yes I want to' ) ); I had to do it manually as below. I am

I have an array as the following: function example() { /* some stuff here that pushes items with dynamically created key strings into an array */ return array( // now lets pretend it returns the created array 'firstStringName' => $whatEver, 'secondStringName' => $somethingElse ); } $arr = example(); // now I know that $arr contains $arr['firstStringName']; I need to find out the index of $arr['firstStringName'] so that I am able to loop through array_keys($arr) and return the key string 'firstStringName' by its index. How can I do that? zrvan If you have a value and want to find the key, use

array_key_exists is not working for large multidimensional array. For ex $arr = array( '1' => 10, '2' => array( '21' => 21, '22' => 22, '23' => array( 'test' => 100, '231' => 231 ), ), '3' => 30, '4' => 40 ); array_key_exists('test',$arr) returns 'false' but it works with some simple arrays. halfdan array_key_exists does NOT work recursive (as Matti Virkkunen already pointed out). Have a look at the PHP manual, there is the following piece of code you can use to perform a recursive search: <?php function array_key_exists_r($needle, $haystack) { $result = array_key_exists($needle, $haystack);