Replace but how

[vbzoom_com]

How can I convert this string:
[color=anycolor]any text[/color]

to this string:
<font color=anycolor>any text</font>

[sarahk]

//have to break up this first line to prevent the board getting clever and distorting my code.
$txt = "[" . color=anycolor" . "]any text[" . "/color]";
$txt = str_replace($txt, "[color", "<font color");
echo $txt . "<br>";
$txt = str_replace($txt, "[/color]", "</font>");
echo $txt . "<br>";
$txt = str_replace($txt, "]", ">");
echo $txt . "<br>";

the final change is to clean up the last ], the echo's are to help you see what happens at each step.

[vbzoom_com]

but that will cause error.

$txt = str_replace($txt, "]", ">");
echo $txt . "<br>";

this will replace all "]" with ">"

for exam:
$text="[color=red]hi[/color] my name is [anyname]" 

What if I want to replace that without make any change on "[anyname]"