<?php
$string = "($a * 10 + $b) Euro and (10 + 2) cents";
$regex = '#\((([^()]+|(?R))*)\)#';
if (preg_match_all($regex, $string ,$matches)) {
echo var_export($matches[1], true);
} else {
//no parenthesis
echo $string;
}
- Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
- Warning: Undefined variable $a in /in/taQYB on line 2
Warning: Undefined variable $b in /in/taQYB on line 2
array (
0 => ' * 10 + ',
1 => '10 + 2',
)
- Output for 5.0.4 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
- Notice: Undefined variable: a in /in/taQYB on line 2
Notice: Undefined variable: b in /in/taQYB on line 2
array (
0 => ' * 10 + ',
1 => '10 + 2',
)
- Output for 7.3.32 - 7.3.33
- array (
0 => ' * 10 + ',
1 => '10 + 2',
)
- Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.3
- Notice: Undefined variable: a in /in/taQYB on line 2
Notice: Undefined variable: b in /in/taQYB on line 2
array (
0 => ' * 10 + ',
1 => '10 + 2',
)
preferences:
227.94 ms | 402 KiB | 322 Q