$year = date("Y", strtotime($yourDateVar));

strftime("%Y");

我喜欢strftime。这是一个抓取/重新组合日期/时间块的很棒的函数。

此外，它尊重区域设置，日期函数不这样做。

$dateYear = date('Y');
echo "Current Year: $dateYear";

本年:2022年

$dateYear = date('y');
echo $dateYear;

22

<?php echo date("Y"); ?>

我显示版权的方式，它会自动更新

<p class="text-muted credit">Copyright &copy;
    <?php
        $copyYear = 2017; // Set your website start date
        $curYear = date('Y'); // Keeps the second year updated
        echo $copyYear . (($copyYear != $curYear) ? '-' . $curYear : '');
    ?> 
</p>    

它将输出结果为

copyright @ 2017   //if $copyYear is 2017 
copyright @ 2017-201x    //if $copyYear is not equal to Current Year.

用M打印当前月份，用D打印日期，用Y打印年份。

<?php echo date("M D Y"); ?>