Xml Navigator

The PHP library Xml Navigator base on XMLReader.

You can assign XML as string or as URI ( or file system path to file).

Navigator can provide XML-document as array or as object.

How to use

$xml =<<<XML
<outer any_attrib="attribute value">
    <inner>element value</inner>
    <nested nested-attrib="nested attribute value">nested element value</nested>
</outer>
XML;
$result =
    \SbWereWolf\XmlNavigator\Convertation\FastXmlToArray
    ::prettyPrint($xml);
echo json_encode($result, JSON_PRETTY_PRINT);

OUTPUT:

{
  "outer": {
    "@attributes": {
      "any_attrib": "attribute value"
    },
    "inner": "element value",
    "nested": {
      "@value": "nested element value",
      "@attributes": {
        "nested-attrib": "nested attribute value"
      }
    }
  }
}

How To Install

composer require sbwerewolf/xml-navigator

Use cases

XML file processing with no worries of file size

Access time to first element do not depend on file size.

Let explain this with example.

First generate XML files by script:

function generateFile(string $filename, int $limit, string $xml): void
{
    $file = fopen($filename, 'a');
    fwrite($file, '<Collection>');

    for ($i = 0; $i < $limit; $i++) {
        $content = "$xml$xml$xml$xml$xml$xml$xml$xml$xml$xml";
        fwrite($file, $content);
    }

    fwrite($file, '</Collection>');
    fclose($file);

    $size = round(filesize($filename) / 1024, 2);
    echo "$filename size is $size Kb" . PHP_EOL;
}

$xml = '<SomeElement key="123">value</SomeElement>' . PHP_EOL;
$generation['temp-465b.xml'] = 1;
$generation['temp-429Kb.xml'] = 1_000;
$generation['temp-429Mb.xml'] = 1_000_000;

foreach ($generation as $filename => $size) {
    generateFile($filename, $size, $xml);
}

temp-465b.xml size is 0.45 Kb
temp-429Kb.xml size is 429.71 Kb
temp-429Mb.xml size is 429687.52 Kb

Now, run benchmark by script:

/**
 * @param string $filename
 * @return void
 */
function parseFirstElement(string $filename): void
{
    $start = hrtime(true);

    /** @var XMLReader $reader */
    $reader = XMLReader::open($filename);
    $mayRead = true;
    while ($mayRead && $reader->name !== 'SomeElement') {
        $mayRead = $reader->read();
    }
    
    $result =
        \SbWereWolf\XmlNavigator\Extraction\PrettyPrintComposer
        ::compose($reader);

    $finish = hrtime(true);
    $duration = $finish - $start;
    $duration = number_format($duration,);
    echo "First element parsing duration of $filename is $duration ns" .
        PHP_EOL;

    $reader->close();
}

$files = [
    'temp-465b.xml',
    'temp-429Kb.xml',
    'temp-429Mb.xml',
];

echo 'Warm up OPcache' . PHP_EOL;
parseFirstElement(current($files));

echo 'Benchmark is starting' . PHP_EOL;
foreach ($files as $filename) {
    parseFirstElement($filename);
}
echo 'Benchmark was finished' . PHP_EOL;

Warm up OPcache
First element parsing duration of temp-465b.xml is 1,250,700 ns
Benchmark is starting
First element parsing duration of temp-465b.xml is 114,400 ns
First element parsing duration of temp-429Kb.xml is 132,400 ns
First element parsing duration of temp-429Mb.xml is 119,900 ns
Benchmark was finished

Parse XML fast with callback for detect suitable elements

$xml = <<<XML
<?xml version="1.0" encoding="utf-8"?>
<CARPLACES>
    <CARPLACE
            ID="11356925"
            OBJECTID="20318444"
            OBJECTGUID="6e237b93-09d6-4adf-9567-e9678608543b"
            CHANGEID="31810106"
            NUMBER="1"
            OPERTYPEID="10"
            PREVID="0"
            NEXTID="0"
            UPDATEDATE="2019-07-09"
            STARTDATE="2019-07-09"
            ENDDATE="2079-06-06"
            ISACTUAL="1"
            ISACTIVE="1"
    />
    <CARPLACE
            ID="11361653"
            OBJECTID="20326793"
            OBJECTGUID="11d9f79b-be6f-43dc-bdcc-70bbfc9f86b0"
            CHANGEID="31822630"
            NUMBER="1"
            OPERTYPEID="10"
            PREVID="0"
            NEXTID="0"
            UPDATEDATE="2019-07-30"
            STARTDATE="2019-07-30"
            ENDDATE="2079-06-06"
            ISACTUAL="1"
            ISACTIVE="1"
    />
    <CARPLACE
            ID="94824"
            OBJECTID="101032823"
            OBJECTGUID="4f37e0eb-141f-4c19-b416-0ec85e2e9e76"
            CHANGEID="192339336"
            NUMBER="0"
            OPERTYPEID="10"
            PREVID="0"
            NEXTID="0"
            UPDATEDATE="2021-04-22"
            STARTDATE="2021-04-22"
            ENDDATE="2079-06-06"
            ISACTUAL="1"
            ISACTIVE="1"
    />
</CARPLACES>
XML;

$reader = XMLReader::XML($xml);

$extractor = \SbWereWolf\XmlNavigator\Parsing\FastXmlParser
    ::extractPrettyPrint(
        $reader,
        /* callback for detect desired elements */
        function (XMLReader $cursor) {
            return $cursor->name === 'CARPLACE';
        }
    );

$results = [];
foreach ($extractor as $result) {
    $results[] = $result;
}
$reader->close();

echo json_encode($results, JSON_PRETTY_PRINT) . PHP_EOL;

Output to console will be:

[
  {
    "CARPLACE": {
      "@attributes": {
        "ID": "11356925",
        "OBJECTID": "20318444",
        "OBJECTGUID": "6e237b93-09d6-4adf-9567-e9678608543b",
        "CHANGEID": "31810106",
        "NUMBER": "1",
        "OPERTYPEID": "10",
        "PREVID": "0",
        "NEXTID": "0",
        "UPDATEDATE": "2019-07-09",
        "STARTDATE": "2019-07-09",
        "ENDDATE": "2079-06-06",
        "ISACTUAL": "1",
        "ISACTIVE": "1"
      }
    }
  },
  {
    "CARPLACE": {
      "@attributes": {
        "ID": "11361653",
        "OBJECTID": "20326793",
        "OBJECTGUID": "11d9f79b-be6f-43dc-bdcc-70bbfc9f86b0",
        "CHANGEID": "31822630",
        "NUMBER": "1",
        "OPERTYPEID": "10",
        "PREVID": "0",
        "NEXTID": "0",
        "UPDATEDATE": "2019-07-30",
        "STARTDATE": "2019-07-30",
        "ENDDATE": "2079-06-06",
        "ISACTUAL": "1",
        "ISACTIVE": "1"
      }
    }
  },
  {
    "CARPLACE": {
      "@attributes": {
        "ID": "94824",
        "OBJECTID": "101032823",
        "OBJECTGUID": "4f37e0eb-141f-4c19-b416-0ec85e2e9e76",
        "CHANGEID": "192339336",
        "NUMBER": "0",
        "OPERTYPEID": "10",
        "PREVID": "0",
        "NEXTID": "0",
        "UPDATEDATE": "2021-04-22",
        "STARTDATE": "2021-04-22",
        "ENDDATE": "2079-06-06",
        "ISACTUAL": "1",
        "ISACTIVE": "1"
      }
    }
  }
]

XML-document as array

XmlConverter implements array approach.

XmlConverter can use to convert XML-document to array, example:

$xml = <<<XML
<complex>
    <a empty=""/>
    <b val="x"/>
    <b val="y"/>
    <b val="z"/>
    <c>0</c>
    <c v="o"/>
    <c/>
    <different/>
</complex>
XML;

$converter = new \SbWereWolf\XmlNavigator\Convertation\XmlConverter(
    \SbWereWolf\XmlNavigator\General\Notation::VAL,
    \SbWereWolf\XmlNavigator\General\Notation::ATTR,
);
$arrayRepresentationOfXml =
    $converter->toPrettyPrint($xml);
echo var_export($arrayRepresentationOfXml,true);

OUTPUT:

array (
    'complex' =>
        array (
            'a' =>
                array (
                    '@attributes' =>
                        array (
                            'empty' => '',
                        ),
                ),
            'b' =>
                array (
                    0 =>
                        array (
                            '@attributes' =>
                                array (
                                    'val' => 'x',
                                ),
                        ),
                    1 =>
                        array (
                            '@attributes' =>
                                array (
                                    'val' => 'y',
                                ),
                        ),
                    2 =>
                        array (
                            '@attributes' =>
                                array (
                                    'val' => 'z',
                                ),
                        ),
                ),
            'c' =>
                array (
                    0 =>
                        array (
                            '@value' => '0',
                        ),
                    1 =>
                        array (
                            '@attributes' =>
                                array (
                                    'v' => 'o',
                                ),
                        ),
                    2 =>
                        array (
                        ),
                ),
            'different' =>
                array (
                ),
        ),
);

XML-document as object

XmlElement implements object-oriented approach.

Navigator API

name(): string // Returns the name of XML element
hasValue(): bool // Returns true if XML element has value
value(): string // Returns the value of XML element
hasAttribute(string $name = ''): bool // Returns true if XML element has attribute with $name. If $name omitted, than returns true if XML element has any attribute
attributes(): XmlAttribute[] // Returns all attributes of XML element
get(string $name = null): string // Get value of attribute with the $name, if $name is omitted, than returns value of random attribute
hasElement(string $name = ''): bool // Returns true if XML element has nested element with $name. If $name omitted, than returns true if XML element has any nested element
elements(): IXmlElement[] // Returns all nested elements
pull(string $name = ''): Generator // Pull IXmlElement for nested element, if $name is defined, than pull elements with the $name

Interact with XML as object

$xml = <<<XML
<doc attrib="a" option="o" >
    <base/>
    <valuable>element value</valuable>
    <complex>
        <a empty=""/>
        <b val="x"/>
        <b val="y"/>
        <b val="z"/>
        <c>0</c>
        <c v="o"/>
        <c/>
        <different/>
    </complex>
</doc>
XML;

$content = \SbWereWolf\XmlNavigator\Convertation\FastXmlToArray
::convert($xml);
$navigator = 
new \SbWereWolf\XmlNavigator\Navigation\XmlElement($content);

/* get name of element */
echo $navigator->name() . PHP_EOL;
/* doc */

/* get value of element */
echo "`{$navigator->value()}`" . PHP_EOL;
/* `` */

/* get list of attributes */
$attributes = $navigator->attributes();
foreach ($attributes as $attribute) {
    /** @var \SbWereWolf\XmlNavigator\Navigation\IXmlAttribute $attribute */
    echo "`{$attribute->name()}` `{$attribute->value()}`" . PHP_EOL;
}
/*
`attrib` `a`
`option` `o`
*/

/* get value of attribute */
echo $navigator->get('attrib') . PHP_EOL;
/* a */

/* get list of nested elements */
$elements = $navigator->elements();
foreach ($elements as $element) {
    echo "{$element->name()}" . PHP_EOL;
}
/*
base
valuable
complex
 */

/* get desired nested element */
/** @var \SbWereWolf\XmlNavigator\Navigation\IXmlElement $elem */
$elem = $navigator->pull('valuable')->current();
echo $elem->name() . PHP_EOL;
/* valuable */

/* get all nested elements */
foreach ($navigator->pull() as $pulled) {
    /** @var \SbWereWolf\XmlNavigator\Navigation\IXmlElement $pulled */
    echo $pulled->name() . PHP_EOL;
    /*
    base
    valuable
    complex
    */
}

/* get nested element with given name */
/** @var \SbWereWolf\XmlNavigator\Navigation\IXmlElement $nested */
$nested = $navigator->pull('complex')->current();
/* get names of all elements of nested element */
$elements = $nested->elements();
foreach ($elements as $element) {
    echo "{$element->name()}" . PHP_EOL;
}
/*
a
b
b
b
c
c
c
different
*/

/* pull all elements with name `b` */
foreach ($nested->pull('b') as $b) {
    /** @var \SbWereWolf\XmlNavigator\Navigation\IXmlElement $b */
    echo ' element with name' .
        ' `' . $b->name() .
        '` have attribute `val` with value' .
        ' `' . $b->get('val') . '`' .
        PHP_EOL;
}
/*
 element with name `b` have attribute `val` with value `x`
 element with name `b` have attribute `val` with value `y`
 element with name `b` have attribute `val` with value `z`
*/

Advanced using

Unit tests have more examples of using, please investigate them.

Run tests

composer test

Contacts

Volkhin Nikolay
e-mail [email protected]
phone +7-902-272-65-35
Telegram @sbwerewolf

Name		Name	Last commit message	Last commit date
Latest commit History 37 Commits
src/SbWereWolf/XmlNavigator		src/SbWereWolf/XmlNavigator
test/Integration		test/Integration
.gitattributes		.gitattributes
.gitignore		.gitignore
README.md		README.md
composer.json		composer.json
composer.lock		composer.lock
phpunit.xml		phpunit.xml

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Xml Navigator

How to use

How To Install

Use cases

XML file processing with no worries of file size

Parse XML fast with callback for detect suitable elements

XML-document as array

XML-document as object

Navigator API

Interact with XML as object

Advanced using

Run tests

Contacts

About

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Xml Navigator

How to use

How To Install

Use cases

XML file processing with no worries of file size

Parse XML fast with callback for detect suitable elements

XML-document as array

XML-document as object

Navigator API

Interact with XML as object

Advanced using

Run tests

Contacts

About

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