assert_options in PHP

Syntax of assert_options

mixed assert_options(int option[, mixed value])

If value is specified, sets the assert control option option to value and returns the previous setting. If value is not specified, returns the current value of option. The following values for option are allowed

Example of assert_options

// 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)

// 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

// This is never reached due to ASSERT_BAIL 
// being true
echo 'Never reached';

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