$t = time();
$t1 = mktime(0,0,0,date(“m”,$t),date(“d”,$t),date(“Y”,$t));
$t2 = mktime(0,0,0,date(“m”,$t),1,date(“Y”,$t));
$t3 = mktime(0,0,0,date(“m”,$t)-1,1,date(“Y”,$t));
$t4 = mktime(0,0,0,1,1,date(“Y”,$t));
$e1 = mktime(23,59,59,date(“m”,$t),date(“d”,$t),date(“Y”,$t));
$e2 = mktime(23,59,59,date(“m”,$t),date(“t”),date(“Y”,$t));
$e3 = mktime(23,59,59,date(“m”,$t)-1,date(“t”,$t3),date(“Y”,$t));
$e4 = mktime(23,59,59,12,31,date(“Y”,$t));
//測(cè)試
echo date(“當(dāng)前 Y-m-d H:i:s”,$t).” $t<br>”;
echo date(“今天起點(diǎn) Y-m-d H:i:s”,$t1).” $t1<br>”;
echo date(“今月起點(diǎn) Y-m-d H:i:s”,$t2).” $t2<br>”;
echo date(“上月起點(diǎn) Y-m-d H:i:s”,$t3).” $t3<br>”;
echo date(“今年起點(diǎn) Y-m-d H:i:s”,$t4).” $t4<br>”;
//測(cè)試
echo date(“今天終點(diǎn) Y-m-d H:i:s”,$e1).” $e1<br>”;
echo date(“今月終點(diǎn) Y-m-d H:i:s”,$e2).” $e2<br>”;
echo date(“上月終點(diǎn) Y-m-d H:i:s”,$e3).” $e3<br>”;
echo date(“今年終點(diǎn) Y-m-d H:i:s”,$e4).” $e4<br>”;
結(jié)果：
當(dāng)前 2011-05-24 15:42:55 1306222975
今天起點(diǎn) 2011-05-24 00:00:00 1306166400
今月起點(diǎn) 2011-05-01 00:00:00 1304179200
上月起點(diǎn) 2011-04-01 00:00:00 1301587200
今年起點(diǎn) 2011-01-01 00:00:00 1293811200
今天終點(diǎn) 2011-05-24 23:59:59 1306252799
今月終點(diǎn) 2011-05-31 23:59:59 1306857599
上月終點(diǎn) 2011-04-30 23:59:59 1304179199
今年終點(diǎn) 2011-12-31 23:59:59 1325347199

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