php 返回最后 2 位数字
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Return the last 2 digits a number
提问by UI Developer
How can I get the last 2 digits of:
我怎样才能得到最后两位数字：
<departureDate>200912</departureDate>
to my object:
到我的对象：
$year = $flightDates->departureDate->year;
回答by Jan.
// first two
$year = substr($flightDates->departureDate->year, 0, 2);
// last two
$year = substr($flightDates->departureDate->year, -2);
But given the fact that you're parsing a date here it would be smarter to use the date function.
p.e. strtotime()and date()or even:
但是鉴于您在这里解析日期这一事实，使用 date 函数会更明智。PEstrtotime()和date()甚至是：
<?php
$someDate ='200912';
$dateObj = DateTime::createFromFormat('dmy', $someDate);
echo $dateObj->format('Y');
// prints "2012" .. (see date formats)
回答by Peon
You can just address it as string, the function substrwill convert it automatically:
您可以substr将其作为字符串寻址，该函数将自动转换它：
<?php
//$year = '200912';
$year = $flightDates->departureDate->year;
echo substr( $year, -2 );
?>
Take a closer look at substrfunction. If you want the result to be a strict integer, then just add (int)in front of the return.
仔细看看substr函数。如果你希望结果是一个严格的整数，那么只需(int)在 return 前面添加。
But, as Jan.said, you should better work with it as a date:
但是，正如Jan.所说，你应该更好地将它作为约会对象：
<?php
//$year = '200912';
$year = $flightDates->departureDate->year;
$date = DateTime::createFromFormat( 'dmy', $year );
echo date( "y", $date->getTimestamp() );
?>
回答by Herbert Van-Vliet
For numbers, you could use php's modulo function (http://php.net/manual/en/internals2.opcodes.mod.php):
对于数字，您可以使用 php 的模函数（http://php.net/manual/en/internals2.opcodes.mod.php）：
<?php
//$year = '200912';
$year = $flightDates->departureDate->year;
echo $year % 100;
?>
回答by ARibas
You could use a basic aritimethic operation, like this...
你可以使用一个基本的算术运算，就像这样......
while ( $var > 100 )
{
$var = (int) $var / 10;
}
There could be a better solution but this one will fit fine
可能有更好的解决方案，但这个解决方案很合适
回答by Baba
Example 1 : You can just strip the tags with strip_tagsand use substr
示例 1 ：您可以将标签剥离strip_tags并使用substr
$number = '<departureDate>200912</departureDate>' ;
$year = substr(strip_tags($number), 0,2);
var_dump($year);
Example 2 : You can also use simplexml_load_stringwith substr
示例 2：您还可以使用simplexml_load_stringwithsubstr
$number = '<departureDate>200912</departureDate>' ;
$year = substr(simplexml_load_string($number),0,2);
var_dump($year);
Output
输出
string '20' (length=2)
回答by Debobroto Das
convert it to string. then take the first two element.
将其转换为字符串。然后取前两个元素。
In java you can do this by following code. Let the variable is an integer named x . then you can use
在 Java 中，您可以通过以下代码执行此操作。让变量是一个名为 x 的整数。然后你可以使用
byte[] array= Integer.toString(x).get.bytes().
Now array[0] and array[1] is the first two digits. array[array.length-1] and array[array.length] are the last two.
现在 array[0] 和 array[1] 是前两位数字。array[array.length-1] 和 array[array.length] 是最后两个。
