PHP Options&Information
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 ...
assert_options
(PHP 4, PHP 5)
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
Table 258. 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
- value
An optional new value for the option.
Return Values
Returns the original setting of any option or FALSE on errors.
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User Contributed Notesassert_options
Frédéric Bouchery
20-Jul-2003 11:25
20-Jul-2003 11:25