PHP PHP mb_ucfirst创建一个String的第一个字符大写 - 多字节（UTF-8）函数

Posted 2021-05-15

<?php
 
  if (!function_exists('mb_ucfirst')) {
    function mb_ucfirst($str, $encoding = "UTF-8", $lower_str_end = false) {
      $first_letter = mb_strtoupper(mb_substr($str, 0, 1, $encoding), $encoding);
      $str_end = "";
      if ($lower_str_end) {
	$str_end = mb_strtolower(mb_substr($str, 1, mb_strlen($str, $encoding), $encoding), $encoding);
      }
      else {
	$str_end = mb_substr($str, 1, mb_strlen($str, $encoding), $encoding);
      }
      $str = $first_letter . $str_end;
      return $str;
    }
  }
 
?>