php数组怎么保留数字索引？
php数组怎么保留数字索引？
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<?php $arr=array("4","5","6");
$arr2=array();
foreach($arr as $v){
$arr2[$v]=$v;
}
print_r($arr2);
echo "<hr>";
$arr3=array_merge(array("1"=>"1","2"=>"..."),$arr2);
print_r($arr3);
?>
