将伪XML标记解析为数组

I have following string:

$input = '[gallery ids="1151,1150,1149,1148,1147" name="ponny"]';

I need to parse it into an array, so desired output should looks like:

$output = array(
  'ids'  => '1151,1150,1149,1148,1147',
  'name' => 'ponny'
);

Pseudo tag name gallery will be ignored.

What is the most efficient way to do this in PHP ?

I don't know how efficient it is, but you could just turn the input into XML:

$input = '[gallery ids="1151,1150,1149,1148,1147" name="ponny"]';

$xml = str_replace( array( '[', ']' ), array( '<', ' />' ), $input );

var_dump( new SimpleXMLElement( $xml ) );

As simplest solution you can extract values between quotes

$input = '[gallery ids="1151,1150,1149,1148,1147" name="ponny"]';
preg_match_all('/\"([^\"]*?)\"/', $input, $matches);
$output = array(
    'ids'  => $matches[1][0],
    'name' => $matches[1][1]
);

The output of var_dump($output) is

array (size=2)
  'ids' => string '1151,1150,1149,1148,1147' (length=24)
  'name' => string 'ponny' (length=5)

$idsStart=strpos('ids',$input);
$idsValueStart=strpos('"',$input,$idsStart);
$idsValueEnd=strpos('"',$input,$idsValueStart);
$ids=substr($input,$idsValueStart,$idsValueEnd-$idsValueStart);
$nameStart=strpos('name',$input);
$nameValueStart=strpos('"',$input,$nameStart);
$nameValueEnd=strpos('"',$input,$nameValueStart);
$name=substr($input,$nameValueStart,$nameValueEnd-$nameValueStart);
$output=array();
$output[]=$ids;
$output[]=$name;

not terribly efficient looking, but if the order of the variables in the gallery array changes it should still give you the right answer.