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Home Backend Development PHP Tutorial 关于数组的比较,请大神们帮忙看看。

关于数组的比较,请大神们帮忙看看。

Jun 23, 2016 pm 01:55 PM
Great God array

PHP如何对多维数组进行比较?实现类似一维数组比较函数 array_diff的功能?
也就是认为 array(a,b,c)和 array(c,b,a) 是两个一样的数组?
我想比较的数组结构比较复杂,可能是 3~4个维度,举个例子

		$arr1 = array(				'hwres'=>array(						'cpu'=>array('brief'=>'intel core II i7-2620M @2.7GHZ double'),						'nainboard'=>array('brief'=>'lenvo 4180RW2 intel QM67'),						'memory'=>array('brief'=>'samsang DDR3 1333MHz 4GB'),						'monitor'=>array('brief'=>'youda AUO223E 14'),						'netcard'=>array(								array('type'=>'有线网卡','brief'=>'intel 82579LM Gigabit network connection'),								array('type'=>'无线网卡','brief'=>'瑞昱 RTL8188CE wireless lan 802.11n PCI-E MIC')								)),				'softres'=>array(						'os'=>'windows7 64 home',						'sp'=>'sp3',						'kb'=>array(								array('name'=>'KB11111'),								array('name'=>'KB11112'),								array('name'=>'KB11113')),						'software'=>array(								array('name'=>'QQ2013','version'=>'1.92.6970.0','time'=>"2013/7/4"),								array('name'=>'sougou输入法','version'=>'6.7.0.0747','time'=>'2013/7/4')								)						)				);				$arr2 = array(				'hwres'=>array(						'cpu'=>array('brief'=>'intel core II i7-2620M @2.7GHZ double'),						'nainboard'=>array('brief'=>'lenvo 4180RW2 intel QM67'),						'memory'=>array('brief'=>'samsang DDR3 1333MHz 4GB'),						'monitor'=>array('brief'=>'youda AUO223E 14'),						'netcard'=>array(								array('type'=>'有线网卡','brief'=>'intel 82579LM Gigabit network connection'),								array('type'=>'无线网卡','brief'=>'瑞昱 RTL8188CE wireless lan 802.11n PCI-E MIC')						)),				'softres'=>array(						'os'=>'windows7 64 home',						'sp'=>'sp3',						'kb'=>array(								array('name'=>'KB11111'),								array('name'=>'KB11113'),								array('name'=>'KB11112')),						'software'=>array(								array('name'=>'sougou输入法','time'=>'2013/7/4','version'=>'6.7.0.0747'),								array('name'=>'QQ2013','version'=>'1.92.6970.0','time'=>"2013/7/4")								)				)		);
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上面两个数组的比较结果应该是一样的
只是array('name'=>'KB11113')和array('name'=>'KB11112')的位置对调了一下
array('name'=>'sougou输入法','time'=>'2013/7/4','version'=>'6.7.0.0747')和array('name'=>'QQ2013','version'=>'1.92.6970.0','time'=>"2013/7/4")对调了一下,并且搜狗输入法内的内容对调了一下,但是值都是没有改变的,有什么好的办法,解决这个问题么,PHP 什么时候会有集合的概念和相关操作函数呢?


回复讨论(解决方案)

能否实现array_diff 类似的效果呢,如果一样就返回空数组,如果不一样,就返回差集

print_r(array_diff_recursive($arr1, $arr2));print_r(array_diff_recursive($arr2, $arr1));function array_diff_recursive($a, $b) {  $res = array();  if(is_numeric(key($a))) { //如果是下标数组,处理上还不尽如人意    foreach($a as $s) {      $r = false;      foreach($b as $k=>$v) {        if($s == $v) {          unset($b[$k]);          $r = true;          break;        }      }      if(! $r) $res[] = $s;    }    return $res;  }  foreach(array_diff(array_keys($a),array_keys($b)) as $k) $res[$k] = $a[$k];  if($res)  return $res;  foreach($a as $k=>$v) {    if($v == $b[$k]) continue;    if(is_array($v)) {      if($t = call_user_func_array( __FUNCTION__, array($v, $b[$k]))) $res[$k] = $t;    }else $res[$k] = $v;  }     return $res;}
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Copy after login

换个算法

function array_diff_recursive($a, $b, &$res=array()) {  if($a == $b) return $res = array();  $res = $a;  if(is_array($a)) {    foreach($a as $k=>$v) {      if(is_numeric($k)) {        foreach($b as $i=>$t) if($v == $t) unset($res[$k]);      }else {        if(isset($b[$k])) array_diff_recursive($a[$k], $b[$k], $res[$k]);      }    }  }  if(is_array($res)) foreach($res as $k=>$v) if($v == array()) unset($res[$k]);  return $res;}
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print_r(array_diff_recursive($arr1, $arr2));print_r(array_diff_recursive($arr2, $arr1));function array_diff_recursive($a, $b) {  $res = array();  if(is_numeric(key($a))) { //如果是下标数组,处理上还不尽如人意    foreach($a as $s) {      $r = false;      foreach($b as $k=>$v) {        if($s == $v) {          unset($b[$k]);          $r = true;          break;        }      }      if(! $r) $res[] = $s;    }    return $res;  }  foreach(array_diff(array_keys($a),array_keys($b)) as $k) $res[$k] = $a[$k];  if($res)  return $res;  foreach($a as $k=>$v) {    if($v == $b[$k]) continue;    if(is_array($v)) {      if($t = call_user_func_array( __FUNCTION__, array($v, $b[$k]))) $res[$k] = $t;    }else $res[$k] = $v;  }     return $res;}
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Copy after login


唠叨老大太牛了。。。
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