全部,我有以下PHP代码来确定Wordpress页面上的两个日期相隔多少年:
<?php
$date1 = new DateTime("2003-03-24");
$current_date = new DateTime(date("Y-m-d"));
$interval = $date1->diff($current_date);
echo $interval->y;
?>
我为Wordpress安装了Exec PHP插件来正确显示这一点。然而,当我尝试显示我的页面时,我得到了以下错误:
致命错误:调用中未定义的方法DateTime::diff()/home/perse/test.website.com/wp-content/plugins/exec php/includs/runtime.php(42):第7行上的eval()代码
我怎样才能让它正常工作?谢谢
我记得不久前的一个问题:如何使用PHP计算两个日期之间的差异?
经过一些小的调整,它看起来像这样:
function convert_number($number) {
$Gn = floor($number / 1000000); /* Millions (giga) */
$number -= $Gn * 1000000;
$kn = floor($number / 1000); /* Thousands (kilo) */
$number -= $kn * 1000;
$Hn = floor($number / 100); /* Hundreds (hecto) */
$number -= $Hn * 100;
$Dn = floor($number / 10); /* Tens (deca) */
$n = $number % 10; /* Ones */
$res = "";
if ($Gn)
$res .= convert_number($Gn) . " Million";
if ($kn) {
$res .= (empty($res) ? "" : " ") .
convert_number($kn) . " Thousand";
}
if ($Hn) {
$res .= (empty($res) ? "" : " ") .
convert_number($Hn) . " Hundred";
}
$ones = array("", "One", "Two", "Three", "Four", "Five", "Six","Seven", "Eight", "Nine", "Ten", "Eleven", "Twelve", "Thirteen","Fourteen", "Fifteen", "Sixteen", "Seventeen", "Eightteen","Nineteen");
$tens = array("", "", "Twenty", "Thirty", "Fourty", "Fifty", "Sixty","Seventy", "Eigthy", "Ninety");
if ($Dn || $n) {
if (!empty($res))
$res .= " and ";
if ($Dn < 2)
$res .= $ones[$Dn * 10 + $n];
else {
$res .= $tens[$Dn];
if ($n)
$res .= "-" . $ones[$n];
}
}
if (empty($res))
$res = "zero";
return $res;
}
function yearsFromNow ($date) {
return convert_number(floor(abs(strtotime($date) - strtotime(date("Y-m-d"))) / (365*60*60*24)));
}
echo yearsFromNow("2007-03-24");
echo yearsFromNow("2009-06-26");
输出:
4
2
从该网站修改的数字到字母功能:http://www.phpro.org/examples/Convert-Numbers-to-Words.html
如手册所述,DateTime::Diff
(以及所有DateInterval
函数)仅在PHP>=5.3.0中可用。
您需要安装该版本,或者找到使用另一组功能的解决方法。下面是一个如何使用旧的基于时间戳的日期函数实现这一点的示例。