- addslashes: documentation ( source)
- serialize: documentation ( source)
- json_encode: documentation ( source)
<?php
$name="why";//声明变量$name,并初始化
function echoName1()
{
//在函数echoName1()里使用global来声明$name
global $name;
echo "the first name is ".$name."<br>";
}
function echoName2()
{
//在函数echoName2()里没有使用global来声明$name
echo "the second name is ".$name."<br>";
}
echoName1();
echoName2();
$last_name = "O'Keefe";
echo $sql = "select * from users where last_name = '" . addslashes($last_name) . "'";
class Person
{
//下面是人的成员属性
var $name; //人的名子
var $sex; //人的性别
var $age; //人的年龄
//定义一个构造方法参数为属性姓名$name、性别$sex和年龄$age进行赋值
function __construct($name = "", $sex = "", $age = "") {
$this->name = $name;
$this->sex = $sex;
$this->age = $age;
}
//这个人可以说话的方法, 说出自己的属性
function say() {
echo "我的名子叫:" . $this->name . " 性别:" . $this->sex . " 我的年龄是:" . $this->age . "<br>";
}
}
$p1 = new Person("张三", "男", 20);
$p1_string = serialize($p1); //把一个对象串行化,返一个字符串
echo $p1_string . "<br>"; //串行化的字符串我们通常不去解析
$area_json_array=array(1,2);
echo json_encode($area_json_array, TRUE);