php ѧϰ
<?php
$txt = 'Hello world';
echo $txt;
?>
<br/>
×Ö·û´®Á¬½Ó(.)
<br/>
echo 'Hello world'. "" . '1234' Êä³ö£º
<?php
$txt1 = 'Hello world';
$txt2 = '1234';
echo $txt1. "" . $txt2;
?>
<br/>
strlen º¯ÊýÓ÷¨ echo strlen('Hello world') Êä³ö£º
<?php
$txt = 'Hello world';
echo strlen($txt);
?>
<br/>
strpos() ÔÚ×Ö·û´®ÖÐÕÒµ½Æ¥Å䣬¸Ãº¯Êý»á·µ»ØµÚÒ»¸öÆ¥ÅäµÄλÖà Êä³ö£º
<?php
echo strpos('Heldddlo world', 'world');
?>
<?php
$x = 5; $y = 0106;
echo $x = $x.$y;
?>
<br/>
<?
echo $y;
?>
<br/>
if .... elseif
<?
$d = date("D");
if ($d == "Wed")
echo "Have a nice weekend!<br/>";
else
echo "Have a nice day!";
?>
<br/>
<?php
switch ($x)
{
case 1:
echo "Number 1";
break;
case 2:
echo "Number 2";
break;
case 3:
echo "Number 3";
break;
default:
echo "No number between 1 and 3";
}
?>
<br/>
<?
$ages = array("Peter"=>32, "Quagmire"=>30, "Joe"=>34);
echo "Peter is ". $ages['Peter']. "years old.";
?>
<br/>
<?
$families = array
(
"Griffin"=>array
(
"Peter",
"Lois",
"Megan"
),
"Quagmire"=>array
(
"Glenn"
),
"Brown&quo
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