如何利用PHP数组打印下标
学习PHP数组时,你可能会遇到很多问题,这里将介绍PHP数组问题的解决方法,在这里拿出来和大家分享一下。开始学习php了。一直主观的认为编程是指用C,C++之类的语言写应用程序。对于网页从来都是敬而远之。但是作为系统管理员,如果要维护的网站是php的话,光能解决系统问题还是不够的,为了解决应及之需还是需要能看懂一些php语法的。
所以就“偷偷”的看php了。在学习过程中发现,php 也可以写脚本。这样不是两全其美么?我只学习php写脚本的这部分,用来进行系统管理,这样就可以熟悉php语法,在必要的时候修改一些网页了。不知道用 php脚本作系统管理,我是不是第一人,嘿嘿,能解决问题就是王道嘛。
因为工作流程原因,同事写了东西以后,需要我更新到服务器上,然后同事再看效果。这样操作是没啥问题的。但是对于同事来说,可能每次修改一些东西,总要“麻烦”我,自己会觉得过意不去。而我呢,为了省事儿,把同事让我做的东西,写了一个脚本,他让我更新的时候,我连接服务器,直接执行脚本就OK了。
废话半天,其实我就是想跟大家分享php咋打印数组下标。当我看到php的foreach函数的时候,觉得它跟perl的foreach有一拼,但是当我打开一个文件并输出的时候,我希望能打印出每行的标号。perl有N多的内置函数,实现这个功能用$.就可以了。难道php实现不了?搜索了半天无果,问了几个写php的朋友也只是说要提前定义一个变量,然后打印这个变量。看来是没办法了,于是继续往下看语法。看到二维数组的时候。有一次不小心把一个一维数组按照二维数组的写法打印了出来,于是乎发现了,这个不可不说的秘密!看图:
498)this.width=498;' onmousewheel = 'javascript:return big(this)' onclick='window.open("http://blog.php100.com/viewpic.php?refimg=" + this.src)' alt=PHP数组 src="http://www.bkjia.com/uploadfile/2013/0904/20130904094734447.jpg" border=0>
内容不用说了吧,先创建一个由十个数字组成的PHP数组,然后输出结果。
498)this.width=498;' onmousewheel = 'javascript:return big(this)' onclick='window.open("http://blog.php100.com/viewpic.php?refimg=" + this.src)' alt=数组下标 src="http://www.bkjia.com/uploadfile/2013/0904/20130904094734660.jpg" border=0>
看到执行结果没?是不是正确打印了数组下标?看来php也很强大嘛,很黄很暴力的说。今天分享就到这了,算不上小甜点,充其量也就是旁门左道:)

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