Php 如何在循环值处于循环外部时移动
我有一个更复杂的问题,我正试图解决,但这一切归结为从while循环中获取mysql\u fetch\u数组值,以便在其他地方使用这些值进行比较 例如:Php 如何在循环值处于循环外部时移动,php,arrays,while-loop,Php,Arrays,While Loop,我有一个更复杂的问题,我正试图解决,但这一切归结为从while循环中获取mysql\u fetch\u数组值,以便在其他地方使用这些值进行比较 例如: $result = mysql_query("SELECT name FROM Names"); while ($data = mysql_fetch_array($result)) { $val = $data['name']; //let's say there are 5 names here// $array1 =
$result = mysql_query("SELECT name FROM Names");
while ($data = mysql_fetch_array($result))
{
$val = $data['name'];
//let's say there are 5 names here//
$array1 = array($val);
}
//now, I would like to use the five names outside of the loop//
我不明白如何把这五个名字都从这个循环中去掉。我把它们放在一个数组中,但是当我从循环外部打印数组时,我得到的只是最后一条记录。如果我从循环中打印数组,我将获得所有记录
是否可以将值存储在循环中,从循环中移动它们,然后在其他地方使用它们?您每次都在循环中设置
$array1
。您需要将$val
添加到数组中,而不是将数组设置为$val
$result = mysql_query("SELECT name FROM Names");
while ($data = mysql_fetch_array($result))
{
$val = $data['name'];
$array1[] = array($val);
}
请注意,您正在覆盖数组的是
$array1[]=
,而不是$array1=
。每次循环执行时,它都会覆盖该值,因此只会得到最后一个值。
试一试
你可以这样做:
$result = mysql_query("SELECT name FROM Names");
$dataset = array();
while ($data = mysql_fetch_array($result))
{
$dataset[] = $data;
}
然后您可以在循环外部自由使用$dataset
$array1 = array();
$result = mysql_query("SELECT name FROM Names");
while ($data = mysql_fetch_array($result)){
$val = $data['name'];
//let's say there are 5 names here//
$array1[] = $val;
}
$array1 = array();
$result = mysql_query("SELECT name FROM Names");
while ($data = mysql_fetch_array($result)){
$val = $data['name'];
//let's say there are 5 names here//
$array1[] = $val;
}