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assert_options

assert_options

Set/get the various assert flags

mixed **assert_options** int $option mixed $value

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

Opmerking: > The use of is discouraged in favor of setting and getting the php.ini directives and with and , respectively. assert_optionszend.assertionsassert.exceptionini_set``ini_get

Passing an empty string as resets the assert callback. option

valueAn optional new value for the option.

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

void assert_callback string $file int $line $assertion string $description


`file`
           The file where  has been called.
          `assert`

`line`
           The line where  has been called.
          `assert`

`assertion`
           Prior to PHP 8.0.0, the assertion which has been passed to ,
           but only when the assertion is given as a string.
           (If the assertion is a boolean condition, this parameter will be an empty string.)
           As of PHP 8.0.0, this parameter is always null.
          `assert`

`description`
           The description that has been passed to .
          `assert`



`value`

Returns the original setting of any option.


   If  is not a valid option a
    is thrown.
  `option``ValueError`


   
  


   
  **Voorbeeld:  example**

```php
<?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';
?>

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