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echo date('Y-m-d H:i:s', strtotime('-1 day'));
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$yesterday = time() - (24 * 60 * 60);
echo 'today:'.date('Y-m-d H:i:s')."\n";
echo 'yesterday:'. date('Y-m-d H:i:s', $yesterday)."\n";
2¡¢echo(),print(),print_r()µÄÇø±ð(3·Ö)
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print_r¿ÉÒÔ´òÓ¡³ö¸´ÔÓÀàÐͱäÁ¿µÄÖµ(ÈçÊý×é,¶ÔÏó)
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smarty£¬Heyes Template ClassµÈ
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strrev()
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$str = "abcdefg";
function strrevv($str)
{
$len=strlen($str);
$newstr = '';
for($i=$len;$i>=0;$i--)
{
$newstr .= $str{$i};
}
return $newstr;
}
$showstr = strrevv($str);
echo $showstr."<br>";
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