Description
mixed 
assert_options ( int what [, mixed value])
     Using assert_options() you may set the various
     assert() control options or just query their
     current settings.
    
表格 1. Assert Options
| option | ini-parameter | default | description | 
|---|
| ASSERT_ACTIVE | assert.active | 1 | enable assert() evaluation | 
| ASSERT_WARNING | assert.warning | 1 | issue a PHP warning for each failed assertion | 
| ASSERT_BAIL | assert.bail | 0 | terminate execution on failed assertions | 
| ASSERT_QUIET_EVAL | assert.quiet_eval | 0 | disable error_reporting during assertion expression
         evaluation | 
| ASSERT_CALLBACK | assert.callback | (NULL) | user function to call on failed assertions | 
     assert_options() will return the original
     setting of any option or FALSE on errors.