# uopz_allow_exit

(PECL uopz 5)

uopz_allow_exit — Allows control over disabled exit opcode

### 说明

uopz_allow_exit ( bool `$allow` ) : void

By default uopz disables the exit opcode, so exit() calls are practically ignored. uopz_allow_exit() allows to control this behavior.

### 参数

`allow`

  Whether to allow the execution of exit opcodes or not.

### 返回值

没有返回值。

### 范例

Example #1 uopz_allow_exit() example

    <?php
    exit(1);
    echo 1;
    uopz_allow_exit(true);
    exit(2);
    echo 2;
    ?>

以上例程会输出：

    1

### 注释

Caution

OPcache optimizes away dead code after unconditional exit.

### 参见

- uopz_get_exit_status() - Retrieve the last set exit status