CODEWITHSUNDEEP
phpregexpreg-replace
abkrim
abkrim

Reputation: 3692

Remove all occurrences of text between brackets including themselves

I need remove all occurrences of text between brackets including themselves of lines.

I use a piece of code that was worth, until it appears more than one element

$array[] = '[2016-12-26 16:48:57 +0100] pkgacct working dir : /cprsync_back3/tamainut';
$array[] = '[2016-12-26 16:48:57 +0100] Copying SSL certificates, CSRs, and keys...[2016-12-26 16:48:57 +0100] Done'

foreach ($array as &$line) {
    $line = preg_replace("/\[[^)]+\]/","",$line);
    echo $line.PHP_EOL;
}

This works well with the first line, but not with the second line

pkgacct working dir : /cprsync_back3/tamainut
Done

What need for extract only [..] but conserving this [..] ?

Upvotes: 1

Views: 108

Answers (3)

Toto
Toto

Reputation: 91373

Just replace the parenthesis by a bracket in the character class:

$line = preg_replace("/\[[^\]]+\]/","",$line);
//                   here __^

Upvotes: 1

revo
revo

Reputation: 48711

Regex:

\[[^][]*(?(?=\[)(?R))[^][]*\]

Live demo

Explanation:

\[              # Match opening bracket
[^][]*          # Match anything but `[` & `]` characters
(?(?=\[)(?R))   # If previous match ends before `[` repeat whole pattern
[^][]*          # //
\]              # Match closing bracket

This regex is supposed to work on nested brackets as well.

Code snippet:

preg_replace("@\[[^][]*(?(?=\[)(?R))[^][]*\]@", "", $line);

Upvotes: 1

Georgy Ivanov
Georgy Ivanov

Reputation: 1579

Take a look at the loop; also your regex needs a fix (note I've added ? quantifier).

$array[
    '[2016-12-26 16:48:57 +0100] pkgacct working dir : /cprsync_back3/tamainut',
    '[2016-12-26 16:48:57 +0100] Copying SSL certificates, CSRs, and keys...[2016-12-26 16:48:57 +0100] Done'
];

foreach ($array as $key => $line) {
    $array[$key] = preg_replace('/\[(.*?)\]/', "", $line);
}

echo '<pre>';
print_r($array);

Upvotes: 1

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