php数组1

1. 基本形式定义数组 $array=array();

print_r可以打印复杂数据类型 函数

2. 定义数组$array1 = array(‘李四‘,‘宁‘,‘凌‘);

3. 向数组中添加函数(需要添加元素的数组,元素1,元素2) :array_push($array1,‘二狗‘,‘狗蛋‘);

4. range(开始,结束,间隔) 返回值数组

$array3 = range(1,10,2);

echo ‘<pre>‘; //原样输出

print_r($array3);

echo ‘</pre>‘;

//Array( [0] => 1 [1] => 3 [2] => 5 [3] => 7 [4] => 9)

5.键值对形式

$array5 = array();

$array5[‘zhang‘] = ‘zhangsan‘;

$array5[‘wang‘] = ‘wangbadan‘;

$array5[‘li‘] = ‘lisi‘;

$array5[‘tang‘] = ‘tangdasha‘;

echo ‘<pre>‘;

print_r($array5);

echo ‘</pre>‘;

//Array( [zhang] => zhangsan [wang] => wangbadan [li] => lisi [tang] => tangdasha)

6.遍历上面的数组foreach

foreach ($array5 as $key=>$value){

echo $key . ‘ : ‘. $value . ‘<br>‘;

}

//zhang:zhangsan

wang:wangbadan

li:lisi

tang:tangdasha

注:键的名字要不一样,要不后面的会覆盖前面的

7.数组长度:count($array6);

8.删除数组中的元素

$array7 = array(1,2,3,4);

array_splice($array7,1,1); //array_splice(数组,index,length);

9.二维数组

$array9 = array(array(‘秋衣‘,‘秋裤‘),array(‘棉衣‘,‘棉裤‘,‘棉鞋‘));

echo ‘<pre>‘;

print_r($array9);

echo ‘</pre>‘;

//Array( [0] => Array ( [0] => 秋衣 [1] => 秋裤 ) [1] => Array ( [0] => 棉衣 [1] => 棉裤 [2] => 棉鞋 ))

10.键值对形式二维数组

$array8 = array(‘秋‘=>array(‘秋衣‘,‘秋裤‘),‘棉‘=>array(‘棉衣‘,‘棉裤‘,‘棉裤‘));

echo ‘<pre>‘;

print_r($array8);

echo ‘</pre>‘;

//Array( [秋] => Array ( [0] => 秋衣 [1] => 秋裤 ) [棉] => Array ( [0] => 棉衣 [1] => 棉裤 [2] => 棉裤 ))

11.遍历二维数组

遍历array9

$array9 = array(array(‘秋衣‘,‘秋裤‘),array(‘棉衣‘,‘棉裤‘,‘棉鞋‘));

for($i= 0;$i < count($array9);$i++){

for($k = 0;$k < count($array9[$i]);$k++){

echo $array9[$i][$k].‘---‘;

}

echo ‘<br>‘;

} //秋衣---秋裤---

棉衣---棉裤---棉鞋---