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Parse a URI and return its components

This function parses a URI (RFC3986 URL, URN or Windows path) and returns an associative array containing any of the various components of the URL that are present. The values of the array elements are not URL decoded.

This function is not meant to validate the given URL, it only breaks it up into the above listed parts.

Install

Via Composer

composer require peterpostmann/parse_uri

If you dont want to use composer just copy the parse_uri.php file and include it into your project.

Why

This function extends the capabailities of parse_url. It parses rfc complient URLs and URNs and (windows) file paths (basically everything which can be passed to file functions (e.g. fopen, file_get_contents)).

Usage

use function peterpostmann\uri\parse_uri;

array parse_uri ( string uri [, int $component = -2 [, bool $convertUrlToUrn = null ]]) 

Via option the output can be reduced to the output of parse_url. Otherwise additonal components are provided:

URL

schema://user:pass@host:port/path?query#fragment

array (size=14)
  'scheme' => string 'schema' (length=6)
  'host' => string 'host' (length=4)
  'port' => string '' (length=0)
  'user' => string 'user' (length=4)
  'pass' => string 'pass' (length=4)
  'path' => string 'port/path' (length=9)
  'query' => string 'query' (length=5)
  'fragment' => string 'fragment' (length=8)
  '_protocol' => string 'schema' (length=6)
  '_userinfo' => string 'user:pass@' (length=10)
  '_authority' => string 'user:pass@host:' (length=15)
  '_document' => string 'schema://user:pass@host:port/path' (length=33)
  '_ressource' => string 'schema://user:pass@host:port/path?query' (length=39)
  '_uri' => string 'schema://user:pass@host:port/path?query#fragment' (length=48)

URI

schema:path?query#fragment

array (size=8)
  'scheme' => string 'schema' (length=6)
  'path' => string 'path' (length=4)
  'query' => string 'query' (length=5)
  'fragment' => string 'fragment' (length=8)
  '_protocol' => string 'schema' (length=6)
  '_document' => string 'schema:path' (length=11)
  '_ressource' => string 'schema:path?query' (length=17)
  '_uri' => string 'schema:path?query#fragment' (length=26)

_protocol will return

• {schema} if present
• 'file' if it is an absolute path ('/path')
• false if it is a relative path ('path/file', 'file')
• true if it is a Windows path ('C:\path')
• null if there is no path

Example

parse URIs

use function peterpostmann\uri\parse_uri;

echo "# URIs (with standard components)\n\n";

var_dump(parse_uri('/path/to/file.ext', peterpostmann\uri\PARSE_URI_DEFAULT));
var_dump(parse_uri('relative/path/to/file.ext', peterpostmann\uri\PARSE_URI_DEFAULT));
var_dump(parse_uri('fileInCwd.ext', peterpostmann\uri\PARSE_URI_DEFAULT));
var_dump(parse_uri('C:/path/to/winfile.ext', peterpostmann\uri\PARSE_URI_DEFAULT));
var_dump(parse_uri('C:\path\to\winfile.ext', peterpostmann\uri\PARSE_URI_DEFAULT));
var_dump(parse_uri('\\\\smbserver\share\path\to\winfile.ext', peterpostmann\uri\PARSE_URI_DEFAULT));
var_dump(parse_uri('file:///path/to/file.ext', peterpostmann\uri\PARSE_URI_DEFAULT));
var_dump(parse_uri('http://user:pass@example.org:8888/path/to/file', peterpostmann\uri\PARSE_URI_DEFAULT));
var_dump(parse_uri('news:comp.infosystems.www.servers.unix', peterpostmann\uri\PARSE_URI_DEFAULT));

echo "# URIs (with additional components)\n\n";

var_dump(parse_uri('C:\path\to\winfile.ext'));
var_dump(parse_uri('\\\\smbserver\share\path\to\winfile.ext'));
var_dump(parse_uri('file:///path/to/file.ext'));
var_dump(parse_uri('http://user:pass@example.org:8888/path/to/file'));
var_dump(parse_uri('news:comp.infosystems.www.servers.unix'));

The above example will output:

# URIs (with standard components)

array (size=1)
  'path' => string '/path/to/file.ext' (length=17)
 
array (size=1)
  'path' => string 'relative/path/to/file.ext' (length=25)

array (size=1)
  'path' => string 'fileInCwd.ext' (length=13)

array (size=1)
  'path' => string 'C:\path\to\winfile.ext' (length=22)

array (size=1)
  'path' => string 'C:\path\to\winfile.ext' (length=22)

array (size=3)
  'scheme' => string 'file' (length=4)
  'host' => string 'smbserver' (length=9)
  'path' => string '/share/path/to/winfile.ext' (length=26)

array (size=3)
  'scheme' => string 'file' (length=4)
  'host' => string '' (length=0)
  'path' => string '/path/to/file.ext' (length=17)

array (size=6)
  'scheme' => string 'http' (length=4)
  'host' => string 'example.org' (length=11)
  'port' => int 8888
  'user' => string 'user' (length=4)
  'pass' => string 'pass' (length=4)
  'path' => string '/path/to/file' (length=13)

array (size=2)
  'scheme' => string 'news' (length=4)
  'path' => string 'comp.infosystems.www.servers.unix' (length=33)

# URIs (with additional components)

array (size=5)
  'path' => string 'C:\path\to\winfile.ext' (length=22)
  '_protocol' => string 'file' (length=4)
  '_document' => string 'C:\path\to\winfile.ext' (length=22)
  '_ressource' => string 'C:\path\to\winfile.ext' (length=22)
  '_uri' => string 'C:\path\to\winfile.ext' (length=22)

array (size=8)
  'scheme' => string 'file' (length=4)
  'host' => string 'smbserver' (length=9)
  'path' => string '/share/path/to/winfile.ext' (length=26)
  '_protocol' => string 'file' (length=4)
  '_authority' => string 'smbserver' (length=9)
  '_document' => string '/share/path/to/winfile.ext' (length=26)
  '_ressource' => string '/share/path/to/winfile.ext' (length=26)
  '_uri' => string '/share/path/to/winfile.ext' (length=26)

array (size=7)
  'scheme' => string 'file' (length=4)
  'host' => string '' (length=0)
  'path' => string '/path/to/file.ext' (length=17)
  '_protocol' => string 'file' (length=4)
  '_document' => string 'file:///path/to/file.ext' (length=24)
  '_ressource' => string 'file:///path/to/file.ext' (length=24)
  '_uri' => string 'file:///path/to/file.ext' (length=24)

array (size=12)
  'scheme' => string 'http' (length=4)
  'host' => string 'example.org' (length=11)
  'port' => int 8888
  'user' => string 'user' (length=4)
  'pass' => string 'pass' (length=4)
  'path' => string '/path/to/file' (length=13)
  '_protocol' => string 'http' (length=4)
  '_userinfo' => string 'user:pass@' (length=10)
  '_authority' => string 'user:pass@example.org:8888' (length=26)
  '_document' => string 'http://user:pass@example.org:8888/path/to/file' (length=46)
  '_ressource' => string 'http://user:pass@example.org:8888/path/to/file' (length=46)
  '_uri' => string 'http://user:pass@example.org:8888/path/to/file' (length=46)

array (size=6)
  'scheme' => string 'news' (length=4)
  'path' => string 'comp.infosystems.www.servers.unix' (length=33)
  '_protocol' => string 'news' (length=4)
  '_document' => string 'news:comp.infosystems.www.servers.unix' (length=38)
  '_ressource' => string 'news:comp.infosystems.www.servers.unix' (length=38)
  '_uri' => string 'news:comp.infosystems.www.servers.unix' (length=38)

patch URIs

use function peterpostmann\uri\parse_uri;
use function peterpostmann\uri\build_uri;

$uri = 'https://example.org/path/to/file?query#fragment':
$patch = [ 'path' => '/path/to/otherfile']
echo build_uri($patch + parse_uri($uri));

The above example will output:

https://example.org/path/to/otherfile?query#fragment

Load References

function resolveReference($reference)
{
    $components = parse_uri($reference);

    if(!isset($components['fragment']))
        return null;

    // absolute reference
    if(isset($components['_document'])) {
        $document = $this->getLoader($components['_protocol'])->load($components['_document']);
    } else { // relative reference
        $document = $this->currentDocument();
    }

    return $this->getReference($document, $components['fragment']);
}

$components['_document'] returns the URI without the fragment. ($components['_ressource'] without fragment and query). $components['_protocol'] indicates the protocol. It usualy is the same as scheme, except for file:/// URIs. For absolute, relative and windows path, scheme is not set, but $components['_protocol'] is set to file. For URIs without schema \\example.org\path the variable is set, but empty.

Helper Functions

build_uri

The function creates a uri (string) from its components.

use function peterpostmann\uri\build_uri;

echo build_uri([
          'scheme' => 'ssh2.sftp',
          'host' => 'example.com',
          'port' => 422,
          'user' => 'user',
          'pass' => 'pass',
          'path' => '/file.php',
          'query' => 'var1=val1&var2=val2',
          'fragment' => 'anchor'
      ])."\n";
      
echo build_uri([
          'scheme' => 'news',
          'path' => 'comp.infosystems.www.servers.unix',
      ])."\n";

The above example will output:

ssh2.sftp://user:pass@example.com:422/file.php?var1=val1&var2=val2#anchor
news:comp.infosystems.www.servers.unix

convert_url2urn

The function converts php URLs which are not real URLs to URNs (what they should have been in first place).

use function peterpostmann\uri\build_uri;

echo convert_url2urn('data://text/plain;base64,SSBsb3ZlIFBIUAo=')."\n";
echo convert_url2urn('zlib://archive.zip#dir/file.txt')."\n";
echo convert_url2urn('php://stdin')."\n";

The above example will output:

data:text/plain;base64,SSBsb3ZlIFBIUAo='
zlib:archive.zip#dir/file.txt
php:stdin

If the URIs are parsed as-is, the parser will look for a host part which is not present. convert_url2urn accepts a second parameter to control the conversion:

• null: Dont convert, except Formats from http://php.net/manual/en/wrappers.php (php://, compress.*://, zip://, zlib://, bzip2://, data://, glob://, phar://, rar://, ogg://, expect://)
• true: convert all
• false: convert nothing

License

The MIT License (MIT). Please see License File for more information.