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Qiang Xue
2012-04-10 20:04:19 -04:00
parent 32757889c4
commit 1b6c24fec4
1 changed files with 16 additions and 11 deletions
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27
framework/util/ArrayHelper.php
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@ -19,7 +19,7 @@ namespace yii\util;
class ArrayHelper extends \yii\base\Component class ArrayHelper extends \yii\base\Component
{ {
/** /**
* Merges two arrays into one recursively. * Merges two or more arrays into one recursively.
* If each array has an element with the same string key value, the latter * If each array has an element with the same string key value, the latter
* will overwrite the former (different from array_merge_recursive). * will overwrite the former (different from array_merge_recursive).
* Recursive merging will be conducted if both arrays have an element of array * Recursive merging will be conducted if both arrays have an element of array
@ -27,22 +27,27 @@ class ArrayHelper extends \yii\base\Component
* For integer-keyed elements, the elements from the latter array will * For integer-keyed elements, the elements from the latter array will
* be appended to the former array. * be appended to the former array.
* @param array $a array to be merged to * @param array $a array to be merged to
* @param array $b array to be merged from * @param array $b array to be merged from. You can specify additional
* arrays via third argument, fourth argument etc.
* @return array the merged array (the original arrays are not changed.) * @return array the merged array (the original arrays are not changed.)
* @see mergeWith
*/ */
public static function merge($a, $b) public static function merge($a, $b)
{ {
foreach ($b as $k => $v) { $args = func_get_args();
if (is_integer($k)) { $res = array_shift($args);
isset($a[$k]) ? $a[] = $v : $a[$k] = $v; while ($args !== array()) {
} elseif (is_array($v) && isset($a[$k]) && is_array($a[$k])) { $next = array_shift($args);
$a[$k] = static::merge($a[$k], $v); foreach ($next as $k => $v) {
} else { if (is_integer($k)) {
$a[$k] = $v; isset($res[$k]) ? $res[] = $v : $res[$k] = $v;
} elseif (is_array($v) && isset($res[$k]) && is_array($res[$k])) {
$res[$k] = self::merge($res[$k], $v);
} else {
$res[$k] = $v;
}
} }
} }
return $a; return $res;
} }
/** /**