本文实例讲述了php从数组中随机选择若干不重复元素的方法。分享给大家供大家参考。具体实现方法如下：
<?php<br />/*<br /> * $array = the array to be filtered<br /> * $total = the maximum number of items to return<br /> * $unique = whether or not to remove duplicates before getting a random list<br /> */<br />function unique_array($array, $total, $unique = true){<br /> $newArray = array();<br /> if((bool)$unique){<br /> $array = array_unique($array);<br /> }<br /> shuffle($array);<br /> $length = count($array);<br /> for($i = 0; $i < $total; $i++){<br /> <div>本文#来源gaodai.ma#com搞##代!^码7网</div><pre>搞代gaodaima码
if($i < $length){
$newArray[] = $array[$i];
}
}
return $newArray;
}
$phrases = array(‘Hello Sailor’,’Acid Test’,’Bear Garden’,’Botch A Job’,’Dark Horse’,
‘In The Red’,’Man Up’,’Pan Out’,’Quid Pro Quo’,’Rub It In’,’Turncoat’,
‘Yes Man’,’All Wet’,’Bag Lady’,’Bean Feast’,’Big Wig’, ‘Big Wig’,’Bear Garden’
,’All Wet’,’Quid Pro Quo’,’Rub It In’);
print_r(unique_array($phrases, 1));
// Returns 1 result
print_r(unique_array($phrases, 5));
// Returns 5 unique results
print_r(unique_array($phrases, 5, false));
// Returns 5 results, but may have duplicates if
// there are duplicates in original array
print_r(unique_array($phrases, 100));
// Returns 100 unique results
print_r(unique_array($phrases, 100, false));
// Returns 100 results, but may have duplicates if
// there are duplicates in original array
希望本文所述对大家的php程序设计有所帮助。
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