Online PHP editor | output for lPIhs

@ 2024-02-13T14:23:56Z

<?php

$text = 'Here are @user:123 and @user:456 mentions';

$contextSize = 5;
$pattern = '~ @user:[0-9]+ \s* (*:mention) | \S+ \s* ~x';

$results = [];

if (preg_match_all($pattern, $text, $matches)) {
    
    foreach ($matches['MARK'] as $k => $v) {
        $beforeIndex =  max(0, $k - $contextSize);
        $beforeSize = $k - $beforeIndex;
        $afterIndex = $k + 1;
        $results[] = [
            'before'  => join(array_slice($matches[0], $beforeIndex, $beforeSize)),
            'mention' => $matches[0][$k],
            'after'   => join(array_slice($matches[0], $afterIndex, $contextSize))
        ];
    }
}

print_r($results);

Output for 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.28, 8.4.1 - 8.4.14, 8.5.0: Array ( [0] => Array ( [before] => Here are [mention] => @user:123 [after] => and @user:456 mentions ) [1] => Array ( [before] => Here are @user:123 and [mention] => @user:456 [after] => mentions ) )
Output for 8.4.15: /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15)
Process exited with code 1.

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