I'm editing a PHP file to replace a function's code by another code provided. My problem is that the function's code may change. So, I don't know exactly how I should do the regex to find it.
Here's an example:
function lol()
{
echo('omg');
$num=0;
while($num<100)
{
echo('ok');
}
}
function teste()
{
echo('ola');
while($num<100)
{
echo('ok');
}
}
function test()
{
echo('oi');
while($num<100)
{
echo('ok');
}
}
What I need is to get the code of function teste(), which would be:
echo('ola');
while($num<100)
{
echo('ok');
}
BUT: I do not know how many whiles, foreaches or how many brackets are inside the functions, neither I don't know it's order. The example was just an example.
How would I be able to get the function's code? Thank you in advance.
As other users stated, this is probably not a good approach. And if you decided to use it anyway, double-check your result as regex can be treacherous.
You can you something like to match even if the function is the last one (@Nippey):
(?:function teste\(\))[^{]*{(.*?)}[^}]*?(?:function|\Z)
Note: I'm using (?:xyz) which is for non-capturing parentheses group. Check if your regex engine support it.
echo('ola');
while($num<100)
{
echo('ok');
}
Using recursive pattern (?R) you can match nested brackets:
$result = preg_replace_callback('#(.*?)\{((?:[^{}]|(?R))*)\}|.*#si', function($m){
if(isset($m[1], $m[2]) && preg_match('#function\s+teste\b#i', $m[1])){
return $m[2];
}
}, $code); // Anonymous function is used here which means PHP 5.3 is required
echo $result;