Remove Text Between Parentheses PHP

user_263192 0
Viewed 68743

I'm just wondering how I could remove the text between a set of parentheses and the parentheses themselves in php.

Example :

ABC (Test1)

I would like it to delete (Test1) and only leave ABC

Thanks

parentheses text php
7 Answers
$string = "ABC (Test1)";
echo preg_replace("/\([^)]+\)/","",$string); // 'ABC '

preg_replace is a perl-based regular expression replace routine. What this script does is matches all occurrences of a opening parenthesis, followed by any number of characters not a closing parenthesis, and again followed by a closing parenthesis, and then deletes them:

Regular expression breakdown:

/  - opening delimiter (necessary for regular expressions, can be any character that doesn't appear in the regular expression
\( - Match an opening parenthesis
[^)]+ - Match 1 or more character that is not a closing parenthesis
\) - Match a closing parenthesis
/  - Closing delimiter
user_332120

without regex

$string="ABC (test)"
$s=explode("(",$string);
print trim($s[0]);
user_1315270

Most quik method (without preg):

$str='ABC (TEST)';
echo trim(substr($str,0,strpos($str,'(')));

If you don't want to trim spaces at end of word, just remove trim function from code.

user_18894490

Folks, regular expressions CANNOT be used to parse non-regular languages. Non-regular languages are those that require state to interpret (i.e. remembering how many parenthesis are currently open).

All of the above answers will fail on this string: "ABC (hello (world) how are you)".

Read Jeff Atwood's Parsing Html The Cthulhu Way: https://blog.codinghorror.com/parsing-html-the-cthulhu-way/, and then use either a by-hand written parser (loop through the characters in the string, see if the character is a parenthesis or not, maintain a stack) or use a lexer/parser capable of parsing a context-free language.

Also see this wikipedia article on the "language of properly matched parenthesis:" https://en.wikipedia.org/wiki/Dyck_language

Alex_166680
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