- <?php
- $array = array('1', '2', '3', '4', '5', '7', '8', '9', '10', '11');
- var_dump(array_key_search($array, 5, @$_GET['page']));
- var_dump(array_multip(array()));
- var_dump(array_mean(array(1, 5, 10, 25, 5)));
- $array = array(
- array('id'=> 1, 'name'=> '网易', 'sex'=> 1),
- array('id'=> 2, 'name'=> '新浪', 'sex'=> 1),
- array('id'=> 3, 'name'=> '腾讯', 'sex'=> 1),
- array('id'=> 4, 'name'=> '阿里巴巴', 'sex'=> 1),
- array('id'=> 5, 'name'=> '搜狐', 'sex'=> 1));
- var_dump(array_rands($array, 0));
- /*
- 数组分段筛选 [可用于数组分页]
- return (array)
- */
- function array_key_search($array, $limit = 5, $page = 0) {
- $page = empty($_GET['page']) || !empty($_GET['page']) && (intval($_GET['page']) < 0 || $_GET['page'] == '1') ? 0 : $_GET['page']-1; //可自己行改写
- sort($array);
- foreach($array as $key=> $val) {
- if($key < $page*$limit || $key > ($page*$limit)+$limit-1) unset($array[$key]);
- }
- return $array;
- }
- /*
- 数组乘积
- return (int)
- */
- function array_multip($array) {
- $multip = 1;
- if(!is_array($array)) return (bool)false;
- if(empty($array)) return (int)0;
- foreach($array as $v) if(!is_numeric($v)) return false; $multip *= $v;
- return (int)$multip;
- }
- /*
- 数组取平均值
- return (int)
- */
- function array_mean($array) {
- if(!is_array($array)) return (bool)false;
- if(empty($array)) return (int)0;
- foreach($array as $v) if(!is_numeric($v)) return false;
- return array_sum($array)/count($array);
- }
- /*
- 随机取出数组
- return (array)
- */
- function array_rands($array, $rand = 0) {
- if(!is_array($array)) return (bool)false;
- if(empty($array) || !is_numeric($rand) || is_numeric($rand) && intval($rand) === 0) return (int)0;
- if(intval($rand) >= count($array)) return (array)$array;
- $rands = array();
- while(count($rands) > intval($rand)) {
- $rand_indexes = rand(0, (count($array)-1));
- if(array_key_exists($rand_indexes, $array))$rands[] = $array[$rand_indexes];
- unset($array[$rand_indexes]);
- }
- return (array)$rands;
- }
- //该片段来自于http://www.codesnippet.cn/detail/050820134954.html
来源: http://www.codesnippet.cn/detail/050820134954.html