assert_options

(PHP 4, PHP 5)

assert_options — Set/get the various assert flags

설명

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

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

인수

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.

반환값

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

예제

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';
?>

참고

assert() - Checks if assertion is FALSE

assert

PHP Options/Info 함수 목록

Last updated: Fri, 24 Jul 2009

add a note User Contributed Notes
assert_options

nanomag_12000 at hotmail dot com
19-Aug-2009 03:11


If you want your callback function be a method of a class. You can pass an array. 


First is the class name, second is the method name





<?php


$newcb = array("Contentcheck","sz_failureLine");


assert_options(ASSERT_CALLBACK, $newcb);


?>

gherson at snet dot net
31-Oct-2007 03:58


After being set to 1, my assert_options(ASSERT_BAIL) value stubbornly stayed there until Apache was restarted, returning it to its default of 0.

(Reproducible on my PHP Version 5.1.2, Apache/2.2.0 (Win32))

webmaster at eiscp dot de
24-Oct-2007 07:45


For all of you try to throw an exception in assert callback function you must set options in following form:



<?php

error_reporting(E_ALL | E_STRICT);



function assert_callcack($file, $line, $message) {

    throw new Exception();

}



assert_options(ASSERT_ACTIVE,     1);

assert_options(ASSERT_WARNING,    0);

assert_options(ASSERT_BAIL,       0);

assert_options(ASSERT_QUIET_EVAL, 0);

assert_options(ASSERT_CALLBACK,   'assert_callcack');



try {

    assert(false);

} catch (Exception $e) {

    echo 'Yes';

}

?>

Fr�d�ric Bouchery
20-Jul-2003 11:25


Here is an exemple how to use the assertion callback function :



<?php

  assert_options( ASSERT_CALLBACK, 'assert_callback');



  function assert_callback( $script, $line, $message ) {

    echo 'You have a design error in your script <b>', $script,'</b> : line <b>', $line,'</b> :<br />';

    echo '<b>', ereg_replace( '^.*//\*', '', $message ), '</b><br /><br />';

    echo 'Open the source file and check it, because it\'s not a normal behaviour !';

    exit;

  }



  $x = 3;

  assert('is_integer( $x ) && ($x >= 0) && ($x <= 10); //* $x must be an integer value from 0 to 10' );

  echo "0 <= $x <= 10";

?>



assertion is usefull for "design by contract" methodology ...

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assert

PHP Options/Info 함수 목록

Last updated: Fri, 24 Jul 2009