一维数组检测

<?php 

$a = array('as','ddf','ddf','as','qwe','wer','ert');  $res = array_unique($a);  var_dump($res);die;

?> 

二维数组检测 

<?php 

$arr = array(    array('a'=>'abc','aa'=>'asdas'),    array('b'=>'cbd','bb'=>'asd'),    array('d'=>'abw','cc'=>'aas'),    array('c'=>'edf','dd'=>'aas'),  );  $newarr = array();  foreach ($arr as $value) {    foreach ($value as $v) {      $newarr[] .= $v;    }      }  $res = array_unique($newarr);  if (count($newarr) != count($res)) {      echo "有重复的";  }else{      echo "没有重复的";  }

?>