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  • mb_eregi()

    (PHP 4 >= 4.2.0, PHP 5, PHP 7)

    Regular expression match ignoring case with multibyte support

    说明

    mb_eregi(string $pattern,string $string[,array &$regs]): int

    Executes the case insensitive regular expression match with multibyte support.

    参数

    $pattern

    The regular expression pattern.

    $string

    The string being searched.

    $regs

    If matches are found for parenthesized substrings of$patternand the function is called with the third argument$regs, the matches will be stored in the elements of the array$regs. If no matches are found,$regsis set to an empty array.

    $regs[1]will contain the substring which starts at the first left parenthesis;$regs[2]will contain the substring starting at the second, and so on.$regs[0]will contain a copy of the complete string matched.

    返回值

    Returns the byte length of the matched string if a match for$patternwas found in$string, or FALSE if no matches were found or an error occurred.

    If the optional parameter$regswas not passed or the length of the matched string is0, this function returns1.

    更新日志

    版本说明
    7.1.0mb_eregi() will now set$regsto an empty array, if nothing matched. Formerly,$regswas not modified in that case.

    注释

    Note:

    mb_regex_encoding()指定的内部编码或字符编码将会当作此函数用的字符编码。

    参见

    This function does not work - it is not case insensitive for non latin characters.
    When this function is perfected, and is not experimental, it may be very usefull in the searching and pinpointing of places inside large text files.
    I simulated it:
    <?php
      $text = 'Äpfel';
      mb_internal_encoding( 'utf-8' );
      printf( "%d\n", mb_eregi( 'äpfel', $text ) ); // Output: 0
      printf( "%d\n", mb_ereg( 'äpfel', mb_strtolower( $text ) ) ); // Output: 1
      printf( "%d\n", mb_eregi( 'äpfel', mb_strtolower( $text ) ) ); // Output: 1
    ?>
    

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