一维数组的重复项 : 使用array_unique函数即可,使用实例如下: ?php $aa=array(apple,banana,pear,apple,wail,watermalon); $bb=array_unique($aa); print_r($bb); ? 结果如下:Array ( [0] = apple [1] =banana [2] = pear [4] = wail [5]= watermalon )
一维数组的重复项:
<?php $aa=array("apple","banana","pear","apple","wail","watermalon"); $bb=array_unique($aa); print_r($bb); ?>
二维数组的重复项:
<?php function assoc_unique($arr, $key) { $tmp_arr = array(); foreach($arr as $k => $v) { if(in_array($v[$key],$tmp_arr))//搜索$v[$key]是否在$tmp_arr数组中存在,若存在返回true { unset($arr[$k]); } else { $tmp_arr[] = $v[$key]; } } sort($arr); //sort函数对数组进行排序 return $arr; } $aa = array( array('id' => 123, 'name' =>'张三'), array('id' => 123, 'name' =>'李四'), array('id' => 124, 'name' =>'王五'), array('id' => 125, 'name' =>'赵六'), array('id' => 126, 'name' =>'赵六') ); $key = 'id'; assoc_unique(&$aa, $key); print_r($aa); ?>
<?php function array_unique_fb($array2D){ foreach ($array2D as $v){ $v = join(",",$v); //降维,也可以用implode,将一维数组转换为用逗号连接的字符串 $temp[] = $v; } $temp =array_unique($temp); //去掉重复的字符串,也就是重复的一维数组 foreach ($temp as $k => $v){ $temp[$k] = explode(",",$v); //再将拆开的数组重新组装 } return $temp; } $aa = array( array('id' => 123, 'name' =>'张三'), array('id' => 123, 'name' =>'李四'), array('id' => 124, 'name' =>'王五'), array('id' => 123, 'name' =>'李四'), array('id' => 126, 'name' =>'赵六') ); $bb=array_unique_fb($aa); print_r($bb) ?>