Classes/Utility/TYPO3/ArrayUtility.php
static public function renumberKeysToAvoidLeapsIfKeysAreAllNumeric(array $array = array(), $level = 0)
    {
        $level++;
        $allKeysAreNumeric = TRUE;
        foreach (array_keys($array) as $key) {
            if (is_numeric($key) === FALSE) {
                $allKeysAreNumeric = FALSE;
                break;
            }
        }
        $renumberedArray = $array;
        if ($allKeysAreNumeric === TRUE) {
            $renumberedArray = array_values($array);
        }
        foreach ($renumberedArray as $key => $value) {
            if (is_array($value)) {
                $renumberedArray[$key] = self::renumberKeysToAvoidLeapsIfKeysAreAllNumeric($value, $level);
            }
        }

        return $renumberedArray;
    }
static public function renumberKeysToAvoidLeapsIfKeysAreAllNumeric(array $array = array(), $level = 0)
    {
        $level++;
        $allKeysAreNumeric = TRUE;
        foreach (array_keys($array) as $key) {
            if (is_numeric($key) === FALSE) {
                $allKeysAreNumeric = FALSE;
                break;
            }
        }
        $renumberedArray = $array;
        if ($allKeysAreNumeric === TRUE) {
            $renumberedArray = array_values($array);
        }
        foreach ($renumberedArray as $key => $value) {
            if (is_array($value)) {
                $renumberedArray[$key] = self::renumberKeysToAvoidLeapsIfKeysAreAllNumeric($value, $level);
            }
        }

        return $renumberedArray;
    }
static public function renumberKeysToAvoidLeapsIfKeysAreAllNumeric ( array $ array = array ( ) , $ level = 0 ) { $ level ++ ; $ allKeysAreNumeric = TRUE ; foreach ( array_keys ( $ array ) as $ key ) { if ( is_numeric ( $ key ) === FALSE ) { $ allKeysAreNumeric = FALSE ; break ; } } $ renumberedArray = $ array ; if ( $ allKeysAreNumeric === TRUE ) { $ renumberedArray = array_values ( $ array ) ; } foreach ( $ renumberedArray as $ key => $ value ) { if ( is_array ( $ value ) ) { $ renumberedArray [ $ key ] = self :: renumberKeysToAvoidLeapsIfKeysAreAllNumeric ( $ value , $ level ) ; } } return $ renumberedArray ; }
Renumber the keys of an array to avoid leaps is keys are all numeric.

Is called recursively for nested arrays.

Example:

Given
array(0 => 'Zero' 1 => 'One', 2 => 'Two', 4 => 'Three')
as input, it will return
array(0 => 'Zero' 1 => 'One', 2 => 'Two', 3 => 'Three')

Will treat keys string representations of number (ie. '1') equal to the
numeric value (ie. 1).

Example:
Given
array('0' => 'Zero', '1' => 'One' )
it will return
array(0 => 'Zero', 1 => 'One')

@author Susanne Moog <typo3@susanne-moog.de>
@see typo3/sysext/core/Classes/Utility/ArrayUtility.php

@param array $array Input array
@param integer $level Internal level used for recursion, do *not* set from outside!
@return array
Renumber the keys of an array to avoid leaps is keys are all numeric .