您好我创建了一个包含4行和5列的数组。我现在想要通过我的数组中的随机数对数组进行排序,而不是如何对多维数组进行排序。我在网上看到我可能已经为每个循环使用了一个,但是如果我要使用它,则不确定将它放在哪里。此外,我不知道如何告诉sortarray我想要排序的列,因为我没有输出的任何id。任何帮助都会受到我的赞赏。
<?php
$vyear = 1;
$vmonth= 3;
$date = "2015-11-25";
$t = 0;
echo date("M-y") . "<br>";
$startdate = "2009/06/01";
$start = strtotime($date);
$currentdate = $start;
$newdate = strtotime ( $t .'month' , strtotime ( $date ) ) ;
$ndate = date ( 'm-Y-d' , $newdate );
echo $ndate;
echo "<br>";
echo "<br>";
echo $date;
$times_table = array();
for($i = 0; $i <= 3; $i++){
$times_table[$i] = array();
}
echo "<pre>";
for($i = 0; $i <= 3; $i++){
for($j = 0; $j <= 4; $j++){
if ($j == 0){
$times_table[$i][$j]= "Version 4" ;
}
else if ($j == 1){
$cur_date = date("M-y", $currentdate);
$currentdate = strtotime('+1 month', $currentdate);
$times_table[$i][$j]= $cur_date ;
echo $cur_date . ">". "<br />";
}
else{
$times_table[$i][$j]= "gary" ;
}
if ($j == 3) {
$numbers = mt_rand(1, 100);
$times_table[$i][$j]= $numbers ;
}
if ($j == 4){
if($i == 0 || $i == 3)
{
$pay = "P";
$times_table[$i][$j]= $pay ;
}
else{
$int = "I";
$times_table[$i][$j]= $int ;
}
}
}
}
// echo $times_table[1][3] ;
print_r($times_table);
echo "</pre>";
?>
答案 0 :(得分:0)
我添加了PHP的usort函数
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private void MyMap_MapElementClick(MapControl sender, MapElementClickEventArgs args)
{
// add your code to position the canvas (pop up) and display it here
}
usort - 使用用户定义的比较函数按值对数组进行排序
这里,您的随机数在索引3中,我们正在比较该索引中的数字
所以你的代码是:
function sortByRandomNo($a, $b) {
return $a[3] - $b[3];
}
usort($times_table, 'sortByRandomNo');
和你的输出:
<?php
$vyear = 1;
$vmonth= 3;
$date = "2015-11-25";
$t = 0;
echo date("M-y") . "<br>";
$startdate = "2009/06/01";
$start = strtotime($date);
$currentdate = $start;
$newdate = strtotime ( $t .'month' , strtotime ( $date ) ) ;
$ndate = date ( 'm-Y-d' , $newdate );
echo $ndate;
echo "<br>";
echo "<br>";
echo $date;
$times_table = array();
for($i = 0; $i <= 3; $i++){
$times_table[$i] = array();
}
echo "<pre>";
for($i = 0; $i <= 3; $i++){
for($j = 0; $j <= 4; $j++){
if ($j == 0){
$times_table[$i][$j]= "Version 4" ;
}
else if ($j == 1){
$cur_date = date("M-y", $currentdate);
$currentdate = strtotime('+1 month', $currentdate);
$times_table[$i][$j]= $cur_date ;
echo $cur_date . ">". "<br />";
}
else{
$times_table[$i][$j]= "gary" ;
}
if ($j == 3) {
$numbers = mt_rand(1, 100);
$times_table[$i][$j]= $numbers ;
}
if ($j == 4){
if($i == 0 || $i == 3)
{
$pay = "P";
$times_table[$i][$j]= $pay ;
}
else{
$int = "I";
$times_table[$i][$j]= $int ;
}
}
}
}
// echo $times_table[1][3] ;
print_r($times_table);
echo "</pre>";
function sortByRandomNo($a, $b) {
return $a[3] - $b[3];
}
usort($times_table, 'sortByRandomNo');
echo "<pre>";
print_r($times_table);
echo "</pre>";