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thinkphp随机问题

Jun 23, 2016 pm 01:49 PM
thinkphp random

比如卖出10条新闻,10条新闻做了排序了:1、2、3、4、5、5、5、6、6、7;
当遇到相同排序号时显示随机显示。也就是相同排序号局部随机显示。
这个东西不知道怎么写了;能不能实现?


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$arr = array( 
array('id' => 1,'name' => 'aaa','uid'=>1), 
array('id' => 2,'name' => 'bbb','uid'=>2), 
array('id' => 3,'name' => 'ccc','uid'=>3), 
array('id' => 4,'name' => 'ddd','uid'=>4), 
array('id' => 5,'name' => 'ccc','uid'=>4), 
array('id' => 6,'name' => 'bbb','uid'=>4), 
array('id' => 7,'name' => 'bbb','uid'=>5), 
array('id' => 8,'name' => 'fff','uid'=>6), 
array('id' => 9,'name' => 'ccc','uid'=>7), 
array('id' => 10,'name' => 'bbb','uid'=>8), 
array('id' => 11,'name' => 'ddd','uid'=>8), 
array('id' => 12,'name' => 'eee','uid'=>9), 
array('id' => 13,'name' => 'fff','uid'=>10), 
); 
每次刷新页面的时候,数组红色的部分随机排序,能不能实现?

$arr = array( array('id' => 1,'name' => 'aaa','uid'=>1), array('id' => 2,'name' => 'bbb','uid'=>2), array('id' => 3,'name' => 'ccc','uid'=>3), array('id' => 4,'name' => 'ddd','uid'=>4), array('id' => 5,'name' => 'ccc','uid'=>4), array('id' => 6,'name' => 'bbb','uid'=>4), array('id' => 7,'name' => 'bbb','uid'=>5), array('id' => 8,'name' => 'fff','uid'=>6), array('id' => 9,'name' => 'ccc','uid'=>7), array('id' => 10,'name' => 'bbb','uid'=>8), array('id' => 11,'name' => 'ddd','uid'=>8), array('id' => 12,'name' => 'eee','uid'=>9), array('id' => 13,'name' => 'fff','uid'=>10), ); usort($arr, function($a, $b) {  if($a['uid'] == $b['uid']) return rand(-1, 1);  return $a['uid'] > $b['uid'] ? 1 : -1;  });print_r($arr);
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