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Example code of vierbergenlars/xml

Informations about the package xml

XML

Build Status Scrutinizer Quality Score Latest Stable Version

A sane wrapper around SimpleXML

Installation

composer require vierbergenlars/xml:@stable

Protip: you should browse the vierbergenlars/xml page to choose a stable version to use, avoid the @stable meta constraint.

Usage

Only the XmlElement class should be instanciated in your code.

The examples are based around following xml structure:

This example is a copy of example.php, which is available in the repository for experimentation.

XmlElement::attr($name) gets the value of the XML attribute $name on the current element.

XmlElement::children() gets the immediate children of the current element. The result implements XmlCollectionInterface. It is an Iterator, implements ArrayAccess and Countable.

For easier chaining in PHP 5.3, a $XmlCollectionInterface->get($idx) function is provided, which has the same effect as $XmlCollectionInterface[$idx].

A ->find($attrs = array()) function is provided that returns a new XmlCollectionInterface, which only contains elements with the attributes passed to the function.

The first element is selected, and the text between its tags is returned (with ->text()).`

Here, the children of $file are filtered to contain only elements with tagname <link>.

All attributes from the <link> element are selected. $link->attributes() returns an implementation of XmlAttributesInterface. The object acts as a read-only array with attribute names as keys and attribute values as value. Additionally, it has a ->get($idx) function for easier chaining.

This is an example of using XmlCollectionInterface::find() to only select the one <link> element with the desired attributes. An equivalent using XmlElementInterface::child() is commented-out below.

Reference

XmlElementInterface

Return Function signature Documentation
string getName() Get the element tag name
string text() Get the text contained in the element
XmlElementInterface setText(string $text) Set the text contained in the element to $text. Returns itself.
string attr(string $name) Get the value of the attribute $name on the element (equivalent to ->attributes()->get($name))
XmlAttributesInterface attributes() Gets all attributes on the element
XmlElementInterface child(string $name = null, array $filter = array(), int $n = 0) Gets the $nth child with the specified name (equivalent to ->children($name)->find($filter)->pos($n))
XmlElementInterface addChild(string $name) Adds a child with tagname $name to the current element. The returned element can be modified.
XmlElementInterface addChild(string $name, string $text) Adds a child with tagname $name and text content $text (->addChild($name)->setText($text))
XmlElementInterface addChild(string $name, XmlElementInterface $element) Adds a child with tagname $name and sets its content and attributes to the same as $element
XmlElementInterface addChild(XmlElementInterface $element) Adds a child to the current element, with tagname, content and attributes the same as $element
XmlCollectionInterface children(string $name = null) Get all children of the element (or only those with the specified name if $name !== null)
XmlCollectionInterface find(array $attributes = array()) Get the children of the element whose attributes match those in $attributes.

XmlCollectionInterface

Implements interfaces Iterator, ArrayAccess, Countable

Return Function signature Documentation
XmlElementInterface get(int $pos) Get the element at the given position
XmlElementInterface add($name, $value = null) Calls XmlElementInterface::addChild() on the parent element
XmlCollectionInterface find(array $attributes = array()) Filters members of the collection on their attributes
int count() Countable::count() Count the elements in the collection
boolean offsetExists(int $offset) ArrayAccess::offsetExists Whether a offset exists (see get())
XmlElementInterface offsetGet(int $offset) ArrayAccess::offsetGet() Offset to retrieve
- offsetSet() Throws LogicException. The collection cannot be modified in this way
- offsetUnset(int $offset) ArrayAcess:offsetUnset() Removes element at $offset from collection
XmlElementInterface current() Iterator::current() Return the current element
int key() Iterator::key() Return key of the current element
void next() Iterator::next() Move forward to next element
void rewind() Iterator::rewind() Rewind the iterator to the first element
boolean valid() Iterator::valid() Checks if current position is valid

  1. This object implements ArrayAccess:

    • $xmlCollectionInterface[$offset] calls $xmlCollectionInterface->offsetGet($offset)
    • isset($xmlCollectionInterface[$offset]) calls $xmlCollectionInterface->offsetExists($offset)
    • $xmlCollectionInterface[$offset] = $mixed calls $xmlCollectionInterface->offsetSet($offset, $mixed) and throws an exception.
    • unset($xmlCollectionInterface[$offset]) calls $xmlCollectionInterface->offsetUnset($offset)

  2. This object implements Countable:

    • count($xmlCollectionInterface) calls $xmlCollectionInterface->count()
  3. This object implements Iterator
    • foreach($xmlCollectionInterface as $key => $value){} calls $xmlCollectionInterface->rewind() once, $xmlCollectionInterface->valid() before each iteration, and if it returns true sets $key = $xmlCollectionInterface->key(); $value = $xmlCollectionInterface->current(). Finally calls $xmlCollectionInterface->next().

XmlAttributesInterface

Implements interfaces Iterator, ArrayAccess, Countable

Return Function signature Documentation
string or null get(string $name) Get the value of the attribute $name
XmlAttributesInterface set(string $name, strinv $value) Sets attribute $name to value $value. Returns itself
int count() Countable::count() Count the elements in the collection
boolean offsetExists(string $attr) ArrayAccess::offsetExists() Whether an attribute exists
string or null offsetGet(string $attr) ArrayAccess::offsetGet() Attribute to retrieve (see get())
- offsetSet(string $attr, string $val ) ArrayAccess:offsetSet() Sets attribute to a value (see set())
- offsetUnset(string $attr) ArrayAccess::offsetUnset() Removes attribute from element
string current() Iterator::current() Return the current element
string key() Iterator::key() Return key of the current element
void next() Iterator::next() Move forward to next element
void rewind() Iterator::rewind() Rewind the iterator to the first element
boolean valid() Iterator::valid() Checks if current position is valid

  1. This object implements ArrayAccess:

    • $xmlAttributesInterface[$offset] calls $xmlAttributesInterface->offsetGet($offset)
    • isset($xmlAttributesInterface[$offset]) calls $xmlAttributesInterface->offsetExists($offset)
    • $xmlAttributesInterface[$offset] = $mixed calls $xmlAttributesInterface->offsetSet($offset, $mixed)
    • unset($xmlAttributesInterface[$offset]) calls $xmlAttributesInterface->offsetUnset($offset)

  2. This object implements Countable:

    • count($xmlAttributesInterface) calls $xmlAttributesInterface->count()
  3. This object implements Iterator
    • foreach($xmlAttributesInterface as $key => $value){} calls $xmlAttributesInterface->rewind() once, $xmlAttributesInterface->valid() before each iteration, and if it returns true sets $key = $xmlAttributesInterface->key(); $value = $xmlAttributesInterface->current(). Finally calls $xmlAttributesInterface->next().

License

MIT

All versions of xml with dependencies

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