PHPDoc detects default values and document them from source.
Example
... * @param string $name name of the person * (complete name!) * @param integer $age age of the person * @param float $size size of person * @param object Adresse $adr adresse of the person * @param array $childs names of the children * @param boolean $job if true, person has a job * @param boolean $gender use FEMALE * or MALE */ function person($name, $age, $size, $adr, $childs, $job=true, $gender=FEMALE) { ...
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