1.多路选择
<?php
$num=5;
switch($num%3)
{
case 0:
echo '十全十美';
break;
case 1:
echo '一帆风顺';
break;
default:
echo '两全其美';
break;
}
?>
2.循环
for,while,do while
for($i=1;$i<=10;$i++)
{
echo"{$i}:锄禾日当午<br>";
}
?>
foreach遍历数组:
$stu=array('berry','merry','rose');
foreach($stu as $v)
{
echo $v.'<br>';
}
foreach($stu as $key=>$value)
{
echo "($key)-($value)<br>";
}
3.函数
预定义函数:
is_int();
自定义函数:
function show()
{
echo '锄禾日当午<br>';}
show();
function cal($num1,$num2)
{
$num=$num1+$num2;
echo "{$num}";}
cal(10,20);
function cal($num1,$num2)
{
$num=$num1+$num2;
echo "{$num}";
return $num;
}
echo cal(10,20);
4.多维数组
$stu=array(
array('tom','yangyang','wanganshi'),
array('李白','dufu')
);
echo $stu[0][0];
$stu1=array(
array('tom'=>'111','yangyang'=>'222','wanganshi'=>'333'),
array('李白'=>'444','dufu'=>'555')
);
echo $stu1[0]['yangyang'];
5.页面乱码的解决
输出中文乱码:
浏览器不知道字符编码,在整个页面最上面添加:
<meta charset="utf-8">
或者在php代码最上面
header('Content-Type:text/html;charset=utf-8');