PHP Interview questions Exam 03

PHP Interview questions Exam 03
4. What tools are used for version control?
Svn

5, how to implement string rollover?

$str = "Holle world!"; echo Strrev ($STR);//!dlrow ellohecho T_strrev ($str);//!dlrow ellohfunction T_strrev ($str) {$n _str = '; for ($i =strlen ($ STR); $i >=0; $i-) {$n _str. = $str [$i];} return $n _str;} End Func

This is no problem, but it should not be the case.

To solve the Chinese garbled method:

/*** reverses the UTF8 string, the function that starts with the MB * @param string $str * @return string*/function T_strrev ($str) {$len = Mb_strlen ($str, ' UTF-8 '); c0/> $string = ";    for ($i = $len-1; $i >= 0; $i-) {       $string. = Mb_substr ($str, $i, 1, ' UTF-8 ');    }    return $string;} End Func

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