PHP 5.6.0beta1 released

DOMDocument::createAttributeNS

(PHP 5)

DOMDocument::createAttributeNS ساخت گره ویژگی جدید به همراه فضای نام مربوط

Description

DOMAttr DOMDocument::createAttributeNS ( string $namespaceURI , string $qualifiedName )

این تابع نمونه جدید کلاس DOMAttr را می‌سازد. This node will not show up in the document unless it is inserted with (e.g.) DOMNode->appendChild().

Parameters

namespaceURI

URI فضای نام.

qualifiedName

نام برچسب و پیشوند ویژگی به عنوان prefix:tagname.

Return Values

DOMAttr جدید یا FALSE اگر خطا رخ داده باشد.

Errors/Exceptions

DOM_INVALID_CHARACTER_ERR

ایجاد اگر qualifiedName شامل کاراکترهای ناصحیح باشد.

DOM_NAMESPACE_ERR

ایجاد اگر qualifiedName نام ناقص تایید شده باشد یا اگر qualifiedName پیشوند داشته باشد و namespaceURI برابر با NULL باشد.

See Also

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User Contributed Notes 1 note

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_ michael
3 years ago
If a new namespace is introduced while creating and inserting an attribute, createAttributeNS() does not behave in the same way as createElementNS().

(1) Location: With createAttributeNS(), the new namespace is declared at the level of the document element. By contrast, createElementNS() declares the new namespace at the level of the affected element itself.

(2) Timing: With createAttributeNS(), the new namespace is declared in the document as soon as the attribute is created - the attribute does not actually have to be inserted. createElementNS() doesn't affect the document as long as the element is not inserted.

An example:

<?php
   
    $source
= <<<XML
<?xml version="1.0" encoding="UTF-8"?>
<root><tag></tag></root>
XML;
   
   
/*
    
     I. createAttributeNS:
     * a new namespace shows up immediately, even without insertion of the attribute
     * the new namespace is declared at the level of the document element
    
    */
   
   
$doc = new DOMDocument( '1.0' );
   
$doc->loadXML( $source );
   
   
// (1) We just create a "namespace'd" attribute without appending it to any element.
   
$attr_ns = $doc->createAttributeNS( '{namespace_uri_here}', 'example:attr' );
   
    print
$doc->saveXML() . "\n";
   
   
/*
      Result: The namespace declaration appears, having been added to the document element. Output:
     
      <?xml version="1.0" encoding="UTF-8"?>
      <root xmlns:example="{namespace_uri_here}"><tag/></root>
     
    */
   
    // (2) Next, we give the attribute a value and insert it.
   
$attr_ns->value = 'value';
   
$doc->getElementsByTagName( 'tag' )->item(0)->appendChild( $attr_ns );
   
    print
$doc->saveXML() . "\n";
   
   
/*
      Result: The "namespace'd" attribute shows up as well. Output:
     
      <?xml version="1.0" encoding="UTF-8"?>
      <root xmlns:example="{namespace_uri_here}"><tag example:attr="value"/></root>
     
    */
   
    /*
    
     II. createElementNS:
     * a new namespace shows up only when the element is inserted
     * the new namespace is declared at the level of the inserted element
    
    */
   
   
$doc = new DOMDocument( '1.0' );
   
$doc->loadXML( $source );
   
   
// (1) We create a "namespace'd" element without inserting it into the document.
   
$elem_ns = $doc->createElementNS( '{namespace_uri_here}', 'example:newtag' );
   
    print
$doc->saveXML() . "\n";
   
   
/*
      Result: The document remains unchanged. Output:
     
      <?xml version="1.0" encoding="UTF-8"?>
      <root><tag/></root>
     
    */
   
    // (2) Next, we insert the new element.
   
$doc->getElementsByTagName( 'tag' )->item(0)->appendChild( $elem_ns );
   
    print
$doc->saveXML() . "\n";
   
   
/*
      Result: The namespace declaration appears, and it is embedded in the element using it. Output:
     
      <?xml version="1.0" encoding="UTF-8"?>
      <root><tag><example:newtag xmlns:example="{namespace_uri_here}"/></tag></root>
     
    */
   
?>
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