[分享]PHP截取某个字符串前面的数字

function getNumbersBeforeChar($string, $char) {
    $pattern = '/(d+)(?=' . preg_quote($char) . ')/';
    preg_match($pattern, $string, $matches);
    return isset($matches[1]) ? $matches[1] : '';
}
  
// 示例使用
$string = '123abc';
$char = 'a';
$result = getNumbersBeforeChar($string, $char);
echo $result; // 输出: 123