Online PHP editor | rfc for or5G5

@ 2014-05-03T13:40:45Z

<?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
$area_json_array=[[1,2],[3,4]];
echo json_encode($area_json_array, TRUE);

Output for git.master, git.master_jit, rfc.property-hooks: the first name is why<br> Warning: Undefined variable $name in /in/or5G5 on line 16 the second name is <br>select * from users where last_name = 'O\'Keefe'O:6:"Person":3:{s:4:"name";s:6:"张三";s:3:"sex";s:3:"男";s:3:"age";i:20;}<br>[[1,2],[3,4]]

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2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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