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<?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) . "'"; //这是一个测试的类，里面没有属性和方法 class Test { //调用不存的方法时自动调用的方法，第一个参数为方法名，第二个参数是数组参数 function __call($function_name, $args) { print "你所调用的函数：$function_name(参数："; print_r($args); echo ")不存在！<br> "; } } //产生一个Test类的对象 $test=new Test(); //调用对象里不存在的方法 $test->demo("one", "two", "three"); //程序不会退出可以执行到这里 echo "this is a test<br>";
Output for git.master, git.master_jit, rfc.property-hooks
the first name is why<br> Warning: Undefined variable $name in /in/NJp8Z on line 16 the second name is <br>select * from users where last_name = 'O\'Keefe'你所调用的函数：demo(参数：Array ( [0] => one [1] => two [2] => three ) )不存在！<br> this is a test<br>

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