# apd_breakpoint

(PECL apd >= 0.2)

apd_breakpoint — Stops the interpreter and waits on a CR from the socket

### 说明

apd_breakpoint ( int `$debug_level` ) : bool

This can be used to stop the running of your script, and await responses on the connected socket. To step the program, just send enter (a blank line), or enter a php command to be executed.

### 参数

`debug_level`

  由加上 XXX_TRACE 常量而形成的整数。

  不建议使用 `MEMORY_TRACE`。这会很慢且似乎不精确。 `ASSIGNMENT_TRACE` 还未被实现。

  要打开所有跟踪功能(TIMING, FUNCTIONS, ARGS SUMMARY (比如 strace -c)) 则使用 99 作为值。

### 返回值

成功时返回 `TRUE`， 或者在失败时返回 `FALSE`。

### 范例

Example #1 Typical session using tcplisten

    bash#tcplisten localhost 7777

    APD - Advanced PHP Debugger Trace File
    ---------------------------------------------------------------------------
    Process Pid (6118)
    Trace Begun at Sun Mar 10 23:13:12 2002
    ---------------------------------------------------------------------------
    (  0.000000): apd_set_session_trace called at /home/alan/Projects/project2/test.
    php:5
    (  0.074824): apd_set_session_trace_socket() at /home/alan/Projects/project2/tes
    t.php:5 returned.  Elapsed (0.074824)
    (  0.074918): apd_breakpoint() /home/alan/Projects/project2/test.php:7
                  ++ argv[0] $(??) = 9
    apd_breakpoint() at /home/alan/Projects/project2/test.php:7 returned.  Elapsed (
    -2089521468.1073275368)
    >\n
    statement: /home/alan/Projects/project2/test.php:8
    >\n
    statement: /home/alan/Projects/project2/test.php:8
    >\n
    statement: /home/alan/Projects/project2/test.php:10
    >apd_echo($i);
    EXEC: apd_echo($i);
    0
    >apd_echo(serialize(apd_get_active_symbols()));
    EXEC:  apd_echo(serialize(apd_get_active_symbols()));
    a:47:{i:0;s:4:"PWD";i:1;s:10:"COLORFGBG";i:2;s:11:"XAUTHORITY";i:3;s:14:"
    COLORTERM_BCE";i:4;s:9:"WINDOWID";i:5;s:14:"ETERM_VERSION";i:6;s:16:"SE
    SSION_MANAGER";i:7;s:4:"PS1";i:8;s:11:"GDMSESSION";i:9;s:5:"USER";i:10;s:5:"
    MAIL";i:11;s:7:"OLDPWD";i:12;s:5:"LANG";i:13;s:10:"COLORTERM";i:14;s:8:"DISP
    LAY";i:15;s:8:"LOGNAME";i:16;s:6:"
    >apd_echo(system('ls /home/mydir'));
    ........
    >apd_continue(0);