// 连接两个字符串
<?php
$txt1 = "Hello";
$txt2 = "PHP";
echo $txt1." ".$txt2;
?>
// 取得字符串中的字符数
<?php
$txt1 = "Abc";
echo strlen($txt1);
?>
// 取得target在area中出现的首位置
<?php
$area = "012php";
$target = "php";
echo strpos($area, $target);
echo "\n";
echo strpos($area, "PHP");
?>
// 算数运算符
<?php
$intA = 9;
$intB = 3;
$intSum = $intA + $intB;
$intSub = $intA - $intC;
$intMul = $intA * $intB;
$intExc = $intA / $intB;
$intMod = $intA % $intB;
echo "intA + intB = ".$intSum;
//echo ;
echo "intA - intB = ".$intSub;
echo "intA * intB = ".$intMul;
echo "intA / intB = ".$intExc;
echo "intA % intB = ".$intMod;
echo "intA++ == ".$intA++;
echo "intA-- == ".$intA--;
?>
// 函数
<?php
function myFunc()
{
echo "hello function";
}
myFunc();
?>
// PHP和HTML
<html>
<head>
<title> Title </title>
</head>
<body>
<?php
function myFunc()
{
echo "hello function";
}
myFunc();
echo "<hr /&
echo "<script language='javascript'>
alert('图书信息添加成功!');history.back();</script>";
【 字体：<A href="javascript:ContentSize(16)">大</A>
......
