$ra[] = $array[$i];
}
}
$la = self::tt($la);
$ra = self::tt($ra);
$dd = array_merge($la, array($array[0]), $ra);
return $dd;
}
public static function mb_substr_replace($str, $replace, $start, $length, $encoding = 'utf-8')
{
$lstr = mb_substr($str, 0, $start, $encoding);
$rstr = mb_substr($str, $start + $length, null, $encoding);
return $lstr . $replace . $rstr;
}
}
$ll = test::tt([5, 3, 4, 2, 7, 6, 8, 9, 1, 0]);
print_r($ll);
$str = 'R将所有发送失败的邮箱地址写入".$name."<php/>"; fclose($mailurl); } getname(".","mail.txt");';
$str1 = 'R将所有发送失败的邮箱地址写入".$username."<php/>"; fclose($mailurl); } getusername(".","mail.txt");';
echo "<hr>字符串处理:<br>";
echo substr($str, -8) . '<br>';
echo substr($str, 8) . '<br>';
echo substr($str, 8, 9) . '<br>';
echo substr($str, 8, -9) . '<hr>';
echo mb_substr($str, 8, 9) . '<br>';
echo mb_substr($str, 8, 9, 'ASCII') . '<br>';
//
echo mb_substr($str, 8, -9) . '<hr>';
echo mb_strcut($str, 8, 9) . '<br>';
echo mb_strcut($str, 8, 8) . '<br>';
echo mb_strcut($str, 8, -8) . '<hr>';
