Set/get the various assert flags

PHP Options/Info Functions
assert
PHP Options/Info Functions
PHP Manual

# assert_options

(PHP 4, PHP 5, PHP 7)

assert_options — Set/get the various assert flags

### Description

mixed assert_options ( int `$what` [, mixed `$value` ] )

Set the various assert() control options or just query their current settings.

### Parameters

`what`

  Assert Options
  Option | INI Setting | Default value | 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`) | Callback to call on failed assertions

`value`

  An optional new value for the option.

### Return Values

Returns the original setting of any option or `FALSE` on errors.

### Examples

Example #1 assert_options() example

`<?php
// This is our function to handle
// assert failures
function assert_failure()
{
echo 'Assert failed';
}
// This is our test function
function test_assert($parameter)
{
assert(is_bool($parameter));
}
// Set our assert options
assert_options(ASSERT_ACTIVE, true);
assert_options(ASSERT_BAIL, true);
assert_options(ASSERT_WARNING, false);
assert_options(ASSERT_CALLBACK, 'assert_failure');
// Make an assert that would fail
test_assert(1);
// This is never reached due to ASSERT_BAIL
// being true
echo 'Never reached';
?>`

### See Also

- assert() - Checks if assertion is FALSE

PHP Options/Info Functions
assert
PHP Options/Info Functions
PHP Manual