Globalising variable variables...

[Anon]

hi,
this function is supposed to take one input ($oldtext) and parse it for variables

variables are defined as {%variablename} inside the templates

what i need it to do is replace {%variablename} with whatevers inside the PHP variable name called $variablename

since the function's inside a class, the variable will also have to be globalised before being used...

this is the code i've got so far... (doesn't work lol)

function variable_parse($oldstring)
{

$numvars = substr_count("$oldstring", "{%");

if($numvars==0)
{
$newvar = $oldstring;
}

while($numvars > 0)
{

for($i=0;$i<$numvars;$i++)
{

$posstart = strpos($oldstring, "{%");

$posstop = strpos($oldstring, "}");

$length = $posstop - $posstart + 1;

$untrimmedvariablename = substr("$oldstring", $posstart, $length);

$varname = substr("$untrimmedvariablename", 2, -1);

global $$varname; //globalise $$varname (makes a variable out of variable name found above {%whatever} and globalises it)

echo "Varname: $varname<br>Globals varname: " . $GLOBALS[$varname];

$newvar = str_replace($untrimmedvariablename,$GLOBALS[$varname],$oldstring);

$oldstring = $newvar;

}

$numvars = substr_count("$oldstring", "$startbit");

}

return $oldstring;

}

[factory21]

Hi,

here's some code I did which is somewhat similar to what you're doing with the exception that I use the PHP variable syntax which allows me to use PHP's eval to have it do the variable substitution for me. Oh yeah, and instead of doing substitution on input, it does substitution on a file...you should be able to tweak it pretty easily to do the former (replace utils_loadFile with your input variable...).

Hope its helpful.

=====
function utils_loadFileEval($filename)
{
//import global variables
foreach ($GLOBALS as $key=>$val)
{
${$key}=$val;
}

$stopmarker="STOPMARKER1234567123456123450987";
$string="\$thestring=<<<$stopmarker\n";
$string.=utils_loadFile($filename);
$string.="\n$stopmarker;\n";
eval($string);

//because the statement gets evaluated in our local scope...
return $thestring;
}