preg_match() is returning inaccurate result

Mailing Lists php.general
1

PHP8.3.4

Can someone help? preg_match() is acting weird about \$ and \^.

var_dump(preg_match("/\$third-party$/",'xyz$third-party')?true:false);//
returns FALSE, really expecting TRUE here!
var_dump(preg_match("/$third-party$/",'xyz$third-party')?true:false);//
returns TRUE???

^ and $ must escape if it is not in beginning/ending position.
Isn't this correct?

At least Javascript is answering correctly.

/\$third-party$/.test('xyz$third-party'); // TRUE
/$third-party$/.test('xyz$third-party'); // FALSE

2

On Tue, Apr 23, 2024 at 8:02 AM <0xabeef@riseup.net> wrote:

PHP8.3.4

Can someone help? preg_match() is acting weird about $ and ^.

var_dump(preg_match(“/$third-party$/”,‘xyz$third-party’)?true:false);//
returns FALSE, really expecting TRUE here!
var_dump(preg_match(“/$third-party$/”,‘xyz$third-party’)?true:false);//
returns TRUE???

^ and $ must escape if it is not in beginning/ending position.
Isn’t this correct?

At least Javascript is answering correctly.

/$third-party$/.test(‘xyz$third-party’); // TRUE
/$third-party$/.test(‘xyz$third-party’); // FALSE

Hi,

double quotes (“”) around a string are evaluating $third as a variable in the first argument.

Use single quotes (‘’) instead.
var_dump(preg_match(‘/$third-party$/’,‘xyz$third-party’)?true:false);
var_dump(preg_match(‘/$third-party$/’,‘xyz$third-party’)?true:false);

Playground: https://onlinephp.io/c/52068