ReflectionParameter::getDefaultValue
ReflectionParameter::getDefaultValue
(PHP 5 >= 5.0.3, PHP 7)
ReflectionParameter::getDefaultValue — Gets default parameter value
Description
public mixed ReflectionParameter::getDefaultValue ( void )
Gets the default value of the parameter for a user-defined function or method. If the parameter is not optional a ReflectionException will be thrown.
Parameters
This function has no parameters.
Return Values
The parameters default value.
Examples
Example #1 Getting
<?php
function foo($test, $bar = 'baz')
{
echo $test . $bar;
}
$function = new ReflectionFunction('foo');
foreach ($function->getParameters() as $param) {
echo 'Name: ' . $param->getName() . PHP_EOL;
if ($param->isOptional()) {
echo 'Default value: ' . $param->getDefaultValue() . PHP_EOL;
}
echo PHP_EOL;
}
?> The above example will output:
Name: test Name: bar Default value: baz
Notes
Note:
Due to implementation details, it is not possible to get the default value of built-in functions or methods of built-in classes. Trying to do this will result a ReflectionException being thrown.
See Also
- ReflectionParameter::isOptional() - Checks if optional
- ReflectionParameter::isPassedByReference() - Checks if passed by reference
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Licensed under the Creative Commons Attribution License v3.0 or later.
https://secure.php.net/manual/en/reflectionparameter.getdefaultvalue.php
