CODEWITHSUNDEEP
phpregex
StudioTime
StudioTime

Reputation: 23959

php remove characters between and including specific characters

I know how to remove specific character within a string but not sure about the following:

e.g. string: Code [7845] [5589] [554] [4]

I need to remove all instances of [ and ] and everything in between them, then trim whitespace off so I end up with simply: Code

Is this possible?

Upvotes: 2

Views: 3523

Answers (3)

FailedDev
FailedDev

Reputation: 26930

This would do it :)

$result = preg_replace('/\[.*?\]|\s*/', '', $subject);

Explanation:

"
\[    # Match the character “[” literally
.     # Match any single character that is not a line break character
   *  # Between zero and unlimited times, as many times as possible, giving back as needed (greedy)
\]    # Match the character “]” literally
"

As @Felix points out this is a fairly easy expression. You should take a look here and try to familiarize yourself with the various techniques you can use.

Upvotes: 5

JRL
JRL

Reputation: 77995

You need to provide more details concerning your requirements.

Assuming:

$s = 'Code [7845] [5589] [554] [4]';

If the string always starts with what you're after and the rest can always be discarded, then this would probably be the most efficient:

$s = trim(substr($s, 0, strpos($s, '[')));

If you want to keep the original string and only remove groups of digits, then:

$s = trim(preg_replace('/\[\d+\]/', '', $s));

Upvotes: 1

Savas Vedova
Savas Vedova

Reputation: 5692

try the following:

$str = trim(preg_replace('/\[\d+\]/', '', 'your_string_here'));

The first argument of the function is a regex. \d that you see matches a number, and the + following it says that you should match at least 1 number. Check here for more information on preg_replace. Check here for more information on Regex.

Upvotes: 1

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