How can I convert {$game.name.fullname} to $game['name']['fullname'] using regex.
thanks
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3Are you writing your own templating engine ? Seems like rewriting the wheel a bit - depending on your point of view, PHP is a templating language itself or there's Smarty or other existing solutions already.Michael Low– Michael Low2011-03-14 14:14:16 +00:00Commented Mar 14, 2011 at 14:14
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4 Answers
preg_replace(
'/{\$([^.{}]*)\.([^.{}]*)\.([^.{}]*)}/',
'$$1[\'$2\'][\'$3\']',
'{$game.name.fullname}');
Edit: Edited according to ridgerunner's comment. Now matches anything between dots and matches multiple strings.
2 Comments
ridgerunner
Yes, this one works, (i.e.
'/^{\$([a-z]*)\.([a-z]*)\.([a-z]*)}$/'), but it needs the 'i' modifier. (It fails to match uppercase letters.) Also, if you need to replace a bunch of these in a string, then you don't want to use the ^$anchors.
Halil Özgür
Thanks :) Actually it was like that at the beginning, I had simplified a bit for debugging.
This tested function has the (commented) regex you want:
function process_data(&$text)
{
$re = '/# Reformat a string.
\{ # Opening delimiter.
(\$\w+) # $1: game.
\. # Parts separated by dot.
(\w+) # $2: name.
\. # Parts separated by dot.
(\w+) # $3: fullname.
\} # Closing delimiter.
/ix';
$text = preg_replace($re, "$1['$2']['$3']", $text);
return $text;
}
2 Comments
Michael Butler
Nice, didn't know about the line breaks & comment support for regular expressions (apparently the 'x' flag)
ridgerunner
@Michael Butler - Glad you discovered the "x" free-spacing mode modifier! Its good practice to write your regexes in this manner from the get-go. This also allows you to provide indentation for nested parentheses just like in other programming languages. (and it greatly eases any future maintenance as well.) Thanks for the comment.
If you are asking how to convert a string like "{mario.jumper.two}" to a php array like $game['mario']['jumper']='two'
$input="{mario.jumper.two}"
$input=str_replace( array('{','}') , '' ); //strip out brackets
$inputArray=explode('.',$input) // creates array( 'mario','jumper','two')
$game=array(
$inputArray[0] => array(
$inputArray[1] => $inputArray[2]
)
);
Comments
If you are asking how to replace {$game.name.fullname} with the value of $game['name']['fullname'], my first suggestion would be not to allow the template to include any old variable (you don't want access to vars like $secret_password), but make an array of values that can be included.
Take a look at this:
<?php
$games = array(
'game' => array(
'name' => array(
'fullname' => 'test'
)
)
);
$matches = array();
preg_match('/{\$([^.]+)\.([^.]+)\.([^}]+)}/', '{$game.name.fullname}', $matches);
var_dump($matches);
echo '<hr/>';
echo $matches[1] .'<br/>';
echo $matches[2] .'<br/>';
echo $matches[3] .'<br/>';
echo '<hr/>';
echo $games[$matches[1]][$matches[2]][$matches[3]];
?>
