You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
16 lines
442 B
16 lines
442 B
<?php
|
|
function func(){
|
|
static $a;
|
|
$b=0;
|
|
$a++;
|
|
$b++;
|
|
echo "$a $b <br>"; //每当func()结束后，静态变量a的生命周期没有结束掉，不断的在原来的数值上+1，而b的生命周期结束了，每次调用func都是0
|
|
}
|
|
|
|
func();
|
|
func();
|
|
func();
|
|
|
|
echo $a; //但是静态变量作用域和局部变量是一样的，在作用域之外是不能使用的
|
|
?>
|
|
|