php数组随机排序

朴灿烈づ我的快乐病毒、 2022-09-10 10:15 173阅读 0赞

参考：[https://www.runoob.com/php/func-array-shuffle.html][https_www.runoob.com_php_func-array-shuffle.html]

[https://www.w3school.com.cn/php/func\_array\_shuffle.asp][https_www.w3school.com.cn_php_func_array_shuffle.asp]

使用shuffle() 函数把数组中的元素按随机顺序重新排列

$paper_q_arr= array(0 =>array("id"=> 440,"questionid"=>152,"displayorder"=>0,"paperid"=>9),
    						1 =>array("id"=> 439,"questionid"=>145,"displayorder"=>0,"paperid"=>9),
    						2 =>array("id"=> 438,"questionid"=>128,"displayorder"=>0,"paperid"=>9),
    						3 =>array("id"=> 437,"questionid"=>152,"displayorder"=>0,"paperid"=>9),
    						4 =>array("id"=> 436,"questionid"=>159,"displayorder"=>0,"paperid"=>9),
    						5 =>array("id"=> 435,"questionid"=>134,"displayorder"=>0,"paperid"=>9),
    						6 =>array("id"=> 434,"questionid"=>139,"displayorder"=>0,"paperid"=>9),
    						7 =>array("id"=> 433,"questionid"=>145,"displayorder"=>0,"paperid"=>9),
    						8 =>array("id"=> 432,"questionid"=>148,"displayorder"=>0,"paperid"=>9),
    						9 =>array("id"=> 431,"questionid"=>137,"displayorder"=>0,"paperid"=>9)
    				);
    	for($i=0;$i<count($paper_q_arr);$i++) {
    		echo "id:{$paper_q_arr[$i]['id']},questionid:{$paper_q_arr[$i]['questionid']},displayorder:{$paper_q_arr[$i]['displayorder']},paperid:{$paper_q_arr[$i]['paperid']}";
    		echo '<br/>';
    	}
    	
    	echo '=====================================================================================';	
    	echo '<br/>';
    	shuffle($paper_q_arr);
    	//print_r($paper_q_arr);
    	for($i=0;$i<count($paper_q_arr);$i++) {
    		echo "id:{$paper_q_arr[$i]['id']},questionid:{$paper_q_arr[$i]['questionid']},displayorder:{$paper_q_arr[$i]['displayorder']},paperid:{$paper_q_arr[$i]['paperid']}";
    		echo '<br/>';
    	}

[https_www.runoob.com_php_func-array-shuffle.html]: https://www.runoob.com/php/func-array-shuffle.html
[https_www.w3school.com.cn_php_func_array_shuffle.asp]: https://www.w3school.com.cn/php/func_array_shuffle.asp