A good habit is to use the hex equivalent character for any character that has a
special meaning in pregex expressions. e.g.,
space = \x20
"/" = \x2f
"." = \x2e
double quotes = \x3d
etc.
Then you won't have this type of problem and you won't have to use stuff like this:
This is for double quotes:
'/"[^"\\\\]*(?:\\\\.[^"\\\\]*)*"/'
this is for single:
'/\'[^\'\\\\]*(?:\\\\.[^\'\\\\]*)*\'/'
It's almost impossible to debug this nonsense.
Also, use delimiters that do not occur in your pattern. I almost never use "/";
and instead like "%". I assume you know the delimiters can be almost any
character.
mathieu leddet wrote:
Hi everyone,
I am struggling with regular expression trying to match strings
delimited by double quotes, but taking into consideration that \" is not
a string ending character.
-------8<---------------------------------------------------------------
-
$in = 'this is a string : "Hi everyone my name is \"Mathieu\"!" Here is
a second string : "PHP is just perfect"';
// pattern for catching strings between "
$pattern = '#"([^"]*)"#';
// surround matching string with HTML span code to highlight
$replacement = '<b>"${1}"</b>';
// perform the reg exp replacement
$out = preg_replace($pattern, $replacement, $in);
-------8<---------------------------------------------------------------
-
$out contains :
this is a string : <b>"Hi everyone my name is \"</b>Mathieu\<b>"!"</b>
Here is a second string : <b>"PHP is just perfect"</b>
This behaviour is normal considering my pattern (anything between two "
that is not a ").
But I don't know how to get this :
this is a string : <b>"Hi everyone my name is \"Mathieu\"!"</b> Here is
a second string : <b>"PHP is just perfect"</b>
I would like my pattern to express : Anything between two " that is not
a " except if it is escaped.
Thanks for reading me, any help in return is welcome !
--
Mathieu
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