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数组随机取值。解决方案

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Release: 2016-06-13 13:32:37
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数组随机取值。

PHP code
<!--

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-->$json = album.' ,曲目:'.$row->truck.'<br>';
}

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有一个json格式的数组。储存唱片专辑及曲目。
如何随机取出4个唱片,每个唱片取出一首曲目,且这4首曲目名不重复?(album为唱片,truck为曲目。)

------解决方案--------------------
我说错了,不是 array_rand 会出现重复项
而是他原始的数据有重复,需要做去重处理
PHP code
$data = json_decode($json);
foreach($data as $v) $r[$v->truck] = $v;
$data = $r;
$ar = array_rand($data, 4);
foreach($ar as $k) {
    echo '唱片:'.$data[$k]->album.' ,曲目:'.$data[$k]->truck.'<br>';
} <div class="clear">
                 
              
              
        
            </div>
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