


Template framework for static websites
First, we write template files for all common elements of the page and the overall layout of the page as before; then delete the common parts from all pages, leaving only the page content; next, in Add three lines of PHP code to each page, as follows:
< ;?php require('prepend.php'); ?>
Hello
Welcome

Hope you like this website
?>
This method basically solves the various problems mentioned earlier. There are only three lines of PHP code in the file now, and none of them directly refer to the template, so the possibility of changing this code is extremely slim. In addition, since the HTML content is outside the PHP markup, there is no problem with handling special characters. We can easily add these three lines of PHP code to all static HTML pages.
The require function introduces a PHP file that contains all the necessary template-related PHP code. The pageStart function sets the template object and page title, and the pageFinish function parses the template and generates the result and sends it to the browser.
How is this achieved? Why is the HTML in the file not sent to the browser until the pageFinish function is called? The answer lies in a new feature of PHP 4, which allows the content output to the browser to be intercepted into a buffer. Let's take a look at the specific code of prepend.php:
require('class.FastTemplate.php');
function pageStart($title = '') {
GLOBAL $tpl;
$tpl = new FastTemplate('.');
$tpl->define( array( 'main' => 'main.htm',
'header' => 'header.htm',
'leftnav'=> 'leftnav.htm' ) );
$tpl->assign('TITLE', $title);
ob_start();
}
function pageFinish() {
GLOBAL $tpl;
$content = ob_get_contents();
ob_end_clean();
$ tpl->assign('CONTENT', $content);
$tpl->parse('HEADER', 'header');
$tpl->parse('LEFTNAV', 'leftnav' );
$tpl->parse('MAIN', 'main');
$tpl->FastPrint('MAIN');
}
?>

php把负数转为正整数的方法:1、使用abs()函数将负数转为正数,使用intval()函数对正数取整,转为正整数,语法“intval(abs($number))”;2、利用“~”位运算符将负数取反加一,语法“~$number + 1”。

实现方法:1、使用“sleep(延迟秒数)”语句,可延迟执行函数若干秒;2、使用“time_nanosleep(延迟秒数,延迟纳秒数)”语句,可延迟执行函数若干秒和纳秒;3、使用“time_sleep_until(time()+7)”语句。

php除以100保留两位小数的方法:1、利用“/”运算符进行除法运算,语法“数值 / 100”;2、使用“number_format(除法结果, 2)”或“sprintf("%.2f",除法结果)”语句进行四舍五入的处理值,并保留两位小数。

判断方法:1、使用“strtotime("年-月-日")”语句将给定的年月日转换为时间戳格式;2、用“date("z",时间戳)+1”语句计算指定时间戳是一年的第几天。date()返回的天数是从0开始计算的,因此真实天数需要在此基础上加1。

方法:1、用“str_replace(" ","其他字符",$str)”语句,可将nbsp符替换为其他字符;2、用“preg_replace("/(\s|\ \;||\xc2\xa0)/","其他字符",$str)”语句。

php判断有没有小数点的方法:1、使用“strpos(数字字符串,'.')”语法,如果返回小数点在字符串中第一次出现的位置,则有小数点;2、使用“strrpos(数字字符串,'.')”语句,如果返回小数点在字符串中最后一次出现的位置,则有。

php字符串有下标。在PHP中,下标不仅可以应用于数组和对象,还可应用于字符串,利用字符串的下标和中括号“[]”可以访问指定索引位置的字符,并对该字符进行读写,语法“字符串名[下标值]”;字符串的下标值(索引值)只能是整数类型,起始值为0。

在PHP中,可以利用implode()函数的第一个参数来设置没有分隔符,该函数的第一个参数用于规定数组元素之间放置的内容,默认是空字符串,也可将第一个参数设置为空,语法为“implode(数组)”或者“implode("",数组)”。


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mPDF
mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),
