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

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.

The callback function set via ASSERT_CALLBACK or assert.callback should have the following signature:

assert_callback ( string $file , int $line , string $assertion [, string $description ] ) : void

file

The file where assert() has been called.

line

The line where assert() has been called.

assertion

The assertion that has been passed to assert(), converted to a string.

description

The description that has been passed to assert().

Passing an empty string as value resets the assert callback.

<?php
// This is our function to handle 
// assert failures
function assert_failure($file, $line, $assertion, $message)
{
    echo "The assertion $assertion in $file on line $line has failed: $message";
}

// 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';
?>