文章目录
- 数组
- 练习输出
- 函数
数组
echo "<pre>";
$number = array(3, 5, 7, 11, 15);
$color = array('blue','yellow','red');
echo $color[2][1]; //二维数组
$color[] = 'orange';
$color[] = 'black';
$color[] = 'white';//**数组下标按照最大的自动下标累加
$color[66] = 'odds';
print_r($color);//必须用print_r输出数组
练习输出
键-值对
$student = array(
'name' => '张三',
'age' => '21',
'height' => '183.5',
'native' => '济宁',
'sex' => '男'
);
数组的嵌套
$students = array(
array(
'name' => '李四',
'age' => '21',
'height' => '163.5',
'native' => '济宁',
'sex' => '男'
),
array(
'name' => '王五',
'age' => '21',
'height' => '153.5',
'native' => '济宁',
'sex' => '男'
),
array(
'name' => '郭千仞',
'age' => '21',
'height' => '183.5',
'native' => '济宁',
'sex' => '男'
)
);
foreach输出数组
foreach ($students as $value) {
echo "大家好,我叫{$value[name]},我今年{$value[age]}岁,我来自{$value[native]},我是一个{$value[sex]}生,我的身高是{$value[height]}厘米<br>";
函数
function sum($a, $b, $c){
return $a + $b + $c;
}
function di($a, $b){
return $a - $b;
}
function link($a, $b){
return $a.$b."<br>";
}
echo sum(1, 2, 3)."<br>";
echo di(1, 2)."<br>";
echo link('Hello','World');