LdapTools\Security\Acl\Dacl::toBinary PHP Method

    public function toBinary($canonicalize = true)
    {
        if ($canonicalize) {
            $this->canonicalize();
        }
        return parent::toBinary();
    }

 /**
  * Get the binary string form of the security descriptor.
  *
  * @param bool $canonicalize Whether or not to canonicalize the DACL
  * @return string
  */
 public function toBinary($canonicalize = true)
 {
     $offsetOwner = 0;
     $offsetGroup = 0;
     $offsetDacl = 0;
     $offsetSacl = 0;
     $owner = $this->owner ? $this->owner->toBinary() : null;
     $group = $this->group ? $this->group->toBinary() : null;
     $dacl = $this->dacl ? $this->dacl->toBinary($canonicalize) : null;
     $sacl = $this->sacl ? $this->sacl->toBinary() : null;
     if ($owner === null || $group === null) {
         throw new LogicException('The owner and the group must be set in the Security Descriptor.');
     }
     if ($sacl === null && $dacl === null) {
         throw new LogicException('Either the SACL or DACL must be set on the Security Descriptor.');
     }
     /**
      * According the the MS docs, the order of the elements is not important. And indeed, I have found no rhyme or
      * reason as to how the owner/group/sacl/dacl elements are ordered in the security descriptor. As long as they
      * point to the correct offset where the element is located then it will work. But the order seems unpredictable
      * as far as coming from AD/Exchange/etc.
      */
     $offset = 40;
     if ($owner) {
         $offsetOwner = $offset;
         $offset += strlen(bin2hex($owner));
     }
     if ($group) {
         $offsetGroup = $offset;
         $offset += strlen(bin2hex($group));
     }
     if ($sacl) {
         $offsetSacl = $offset;
         $offset += strlen(bin2hex($sacl));
     }
     if ($dacl) {
         $offsetDacl = $offset;
     }
     return pack('C1C1v1V1V1V1V1', $this->revision, $this->rmControlFlags->getValue(), $this->controlFlags->getValue(), $offsetOwner / 2, $offsetGroup / 2, $offsetSacl / 2, $offsetDacl / 2) . $owner . $group . $sacl . $dacl;
 }