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<?php $result = "How much is 25.5 + 35.5"; $allowed = array('1','2','3','4','5','6','7', '8', '9','0','-','+','/','*','.'); $regex = sprintf('/([%s]+)/u', preg_quote(join($allowed), '/')); preg_match_all($regex, $result, $match); switch($match[0][1]){ case '-': echo $match[0][0] - $match[0][2]; break; case '*': echo $match[0][0] * $match[0][2]; break; case '+': echo $match[0][0] + $match[0][2]; break; case '/': echo $match[0][0] / $match[0][2]; break; }
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 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
61
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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175.36 ms | 407 KiB | 5 Q