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123 lines
2.2 KiB
Markdown
123 lines
2.2 KiB
Markdown
\>多维数组的建立
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\>\>对于多维数组来说，同样需要多级索引来定位元素
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**[html]** [view plain](http://blog.csdn.net/estom_yin/article/details/51920304)
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[copy](http://blog.csdn.net/estom_yin/article/details/51920304)
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1. **\<body\>**
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2.
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3. **\<?php**
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4. \$cars = array
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5. (
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6. array("Volvo",33,20),
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7. array("BMW",17,15),
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8. array("Saab",5,2),
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9. array("Land Rover",15,11)
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10. );
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11.
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12. for (\$row = 0; \$row **\<** **4**; \$row++) {
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13. echo "**\<p\>\<b\>**行数 \$row**\</b\>\</p\>**";
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14. echo "**\<ul\>**";
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15. for (\$col = 0; \$col **\<** **3**; \$col++) {
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16. echo "**\<li\>**".\$cars[\$row][\$col]."**\</li\>**";
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17. }
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18. echo "**\</ul\>**";
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19. }
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20. **?\>**
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21.
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22. **\</body\>**
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//这些代码也说明了一个问题，使用php可以直接输出html格式并显示
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\>日期
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PHP中Date(format, timestamp)
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timestamp 规定时间戳，默认是当前时间
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format 规定时间格式
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d月中某天
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m某月
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y某年
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l周里某天
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h带有首位零的12小时格式
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i带有首位零的分钟格式
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s带有首位零的秒
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a小写的五千后午后
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date_default_timezone_set("Asia/Shanghai")//修改时区
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mktime(hour, minute, second, month, day, year)//设定时间戳
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strtotime(变化时间, now开始时间)//创建日期时间
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//代码实现了输出周六的日期。
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使用了date的时间戳，使用了灵活设定strtotime的变化时间
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**[html]** [view plain](http://blog.csdn.net/estom_yin/article/details/51920304)
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[copy](http://blog.csdn.net/estom_yin/article/details/51920304)
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1. **\<?php**
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2. \$startdate = strtotime("Saturday");
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3. \$enddate = strtotime("+6 weeks",\$startdate);
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4.
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5. while (\$startdate **\<** \$enddate) {
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6. echo date("M d", \$startdate),"**\<br\>**";
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7. \$startdate = strtotime("+1 week", \$startdate);
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8. }
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9. **?\>**
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//代码实现了距离12月31还剩下的时间
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**[php]** [view plain](http://blog.csdn.net/estom_yin/article/details/51920304)
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[copy](http://blog.csdn.net/estom_yin/article/details/51920304)
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1. \<?php
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2. \$d1=strtotime("December 31");
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3. \$d2=ceil((\$d1-time())/60/60/24);
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4. echo "距离十二月三十一日还有：" . \$d2 ." 天。";
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5. ?\>
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