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PHP: assert_options - Manual
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assert" width="11" height="7"/> <PHP オプション/情報 関数
Last updated: Fri, 05 Sep 2008

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assert_options

(PHP 4, PHP 5)

assert_options様々な assert フラグを設定/取得する

説明

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

種々の assert() 制御オプションを設定したり、 単に現在の設定を調べたりします。

パラメータ

what

assert オプション
オプション ini パラメータ デフォルト 説明
ASSERT_ACTIVE assert.active 1 assert() による評価を有効にする
ASSERT_WARNING assert.warning 1 assersion に失敗した場合に PHP 警告を発生する
ASSERT_BAIL assert.bail 0 assersion に失敗した場合に実行を終了する
ASSERT_QUIET_EVAL assert.quiet_eval 0 assersion 式については error_reporting を無効にする
ASSERT_CALLBACK assert.callback (NULL) assertion に失敗した場合にコールされるユーザ関数

value

オプションに指定する新しい値。

返り値

そのオプションの元の値、あるいはエラー時に FALSE を返します。



add a note add a note User Contributed Notes
assert_options
gherson at snet dot net
01-Nov-2007 12:58
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
25-Oct-2007 04:45
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';
}
?>
Frdric Bouchery
21-Jul-2003 08:25
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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