If you intermix writing sub-elements and attributes, any attempt to write attributes after the first sub-element will fail and return false:
<?php
$xml = new XMLWriter();
$xml->openMemory();
$xml->startElement('element');
$xml->writeAttribute('attr1', '0');
$xml->writeElement('subelem', '0');
var_dump($xml->writeAttribute('attr2', '0'));
$xml->endElement();
echo $xml->flush();
?>
Outputs:
bool(false)
<element attr1="0"><subelem>0</subelem></element>
This is because this is a forward-only writer and the start tags are already finished. There is no going back to add more attributes later, there is no place to put attr2. This is exactly how it is supposed to work.
XMLWriter::writeAttribute
xmlwriter_write_attribute
(PHP 5 >= 5.1.2, PHP 7, PECL xmlwriter >= 0.1.0)
XMLWriter::writeAttribute -- xmlwriter_write_attribute — Write full attribute
Description
Object oriented style
XMLWriter::writeAttribute
( string
$name
, string $value
) : boolProcedural style
xmlwriter_write_attribute
( resource
$xmlwriter
, string $name
, string $value
) : boolWrites a full attribute.
Parameters
-
xmlwriter -
Only for procedural calls. The XMLWriter resource that is being modified. This resource comes from a call to xmlwriter_open_uri() or xmlwriter_open_memory().
-
name -
The name of the attribute.
-
value -
The value of the attribute.
Return Values
Returns TRUE on success or FALSE on failure.
Examples
Example #1 Intermixing Sub-elements and Attributes
If writing sub-elements and attributes is intermixed, any attempt to write attributes after the first sub-element will fail and return false.
<?php
$xml = new XMLWriter();
$xml->openMemory();
$xml->startElement('element');
$xml->writeAttribute('attr1', '0');
$xml->writeElement('subelem', '0');
var_dump($xml->writeAttribute('attr2', '0'));
$xml->endElement();
echo $xml->flush();
?>
The above example will output:
bool(false) <element attr1="0"><subelem>0</subelem></element>
See Also
- XMLWriter::writeAttributeNs() - Write full namespaced attribute
- XMLWriter::startAttribute() - Create start attribute
- XMLWriter::startAttributeNs() - Create start namespaced attribute
- XMLWriter::endAttribute() - End attribute
add a note
User Contributed Notes 2 notes
Paul ¶
7 years ago
Jason Hughes ¶
13 years ago
If you intermix writing sub-elements and attributes, any attributes that are written after the first sub-element are ignored/discarded:
<?php
$xml->startElement('element');
$xml->writeAttribute('attr1', 0);
$xml->writeElement('subelem', 0);
$xml->writeAttribute('attr2', 0);
$xml->endElement();
?>
Outputs:
<element attr1=0>
<subelem>0</subelem>
</element>
This is stupid, but the way it works as of PHP 5.2.4.
