# posix_strerror

(PHP 4 >= 4.2.0, PHP 5, PHP 7)

posix_strerror — Retrieve the system error message associated with the given errno

### 说明

posix_strerror ( int `$errno` ) : string

Returns the POSIX system error message associated with the given `errno`. You may get the `errno` parameter by calling posix_get_last_error().

### 参数

`errno`

  A POSIX error number, returned by posix_get_last_error(). If set to 0, then the string "Success" is returned.

### 返回值

Returns the error message, as a string.

### 范例

Example #1 posix_strerror() example

This example will attempt to kill a process which does not exist, then will print out the corresponding error message.

    <?php
    posix_kill(50,SIGKILL);
    echo posix_strerror(posix_get_last_error())."\n";
    ?>

以上例程的输出类似于：

    No such process

### 参见

- posix_get_last_error() - Retrieve the error number set by the last posix function that failed