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    mb_ereg

    (PHP 4 >= 4.2.0, PHP 5)

    mb_ereg — Regular expression match with multibyte support

    Description

    int mb_ereg ( string $pattern , string $string [, array $regs ] )

    Executes the regular expression match with multibyte support.

    Parameters

    pattern

    The search pattern.

    string

    The search string.

    regs

    Contains a substring of the matched string.

    Return Values

    Executes the regular expression match with multibyte support, and returns 1 if matches are found. If the optional regs parameter was specified, the function returns the byte length of matched part, and the array regs will contain the substring of matched string. The function returns 1 if it matches with the empty string. If no matches are found or an error happens, FALSE will be returned.

    Notes

    Note:

    The internal encoding or the character encoding specified by mb_regex_encoding() will be used as the character encoding for this function.

    See Also

    • mb_regex_encoding() - Set/Get character encoding for multibyte regex
    • mb_eregi() - Regular expression match ignoring case with multibyte support

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    User Contributed Notes 3 notes

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    1
    pressler at hotmail dot de
    2 years ago
    Note that mb_ereg() does not support the \uFFFF unicode syntax but uses \x{FFFF} instead:

    <?PHP

    $text     = 'Peter is a boy.'; // english
    $text = 'بيتر هو صبي.'; // arabic
    //$text = 'פיטר הוא ילד.'; // hebrew

    mb_regex_encoding('UTF-8');

    if(    mb_ereg('[\x{0600}-\x{06FF}]', $text)) // arabic range
    //if(mb_ereg('[\x{0590}-\x{05FF}]', $text)) // hebrew range
    {
        echo     "Text has some arabic/hebrew characters.";
    }
    else
    {
        echo     "Text doesnt have arabic/hebrew characters.";
    }

    ?>
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    1
    Riikka K
    6 months ago
    While hardly mentioned anywhere, it may be useful to note that mb_ereg uses Oniguruma library internally. The syntax for the default mode (ruby) is described here:

    http://www.geocities.jp/kosako3/oniguruma/doc/RE.txt
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    1
    Jon
    5 years ago
    Hebrew regex tested on PHP 5, Ubuntu 8.04.
    Seems to work fine without the mb_regex_encoding lines (commented out).
    Didn't seem to work with \uxxxx (also commented out).

    <?php
    echo "Line ";
    //mb_regex_encoding("ISO-8859-8");
    //if(mb_ereg(".*([\u05d0-\u05ea]).*", $this->current_line))
    if(mb_ereg(".*([א-ת]).*", $this->current_line))
    {
        echo     "has";
    }
    else
    {
        echo     "doesn't have";
    }
    echo     " Hebrew characters.<br>";   
    //mb_regex_encoding("UTF-8");
    ?>
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