PHP 7.0.6 Released

    Predefined Constants

    The constants below are defined by this extension, and will only be available when the extension has either been compiled into PHP or dynamically loaded at runtime.

    INPUT_POST (integer)
    POST variables.
    INPUT_GET (integer)
    GET variables.
    COOKIE variables.
    INPUT_ENV (integer)
    ENV variables.
    INPUT_SERVER (integer)
    SERVER variables.
    INPUT_SESSION (integer)
    SESSION variables. (not implemented yet)
    INPUT_REQUEST (integer)
    REQUEST variables. (not implemented yet)
    FILTER_FLAG_NONE (integer)
    No flags.
    FILTER_REQUIRE_SCALAR (integer)
    Flag used to require scalar as input
    FILTER_REQUIRE_ARRAY (integer)
    Require an array as input.
    FILTER_FORCE_ARRAY (integer)
    Always returns an array.
    FILTER_NULL_ON_FAILURE (integer)
    Use NULL instead of FALSE on failure.
    FILTER_VALIDATE_INT (integer)
    ID of "int" filter.
    FILTER_VALIDATE_BOOLEAN (integer)
    ID of "boolean" filter.
    FILTER_VALIDATE_FLOAT (integer)
    ID of "float" filter.
    FILTER_VALIDATE_REGEXP (integer)
    ID of "validate_regexp" filter.
    FILTER_VALIDATE_URL (integer)
    ID of "validate_url" filter.
    FILTER_VALIDATE_EMAIL (integer)
    ID of "validate_email" filter.
    FILTER_VALIDATE_IP (integer)
    ID of "validate_ip" filter.
    FILTER_VALIDATE_MAC (integer)
    ID of "validate_mac_address" filter. (Available as of PHP 5.5.0)
    FILTER_DEFAULT (integer)
    ID of default ("unsafe_raw") filter. This is equivalent to FILTER_UNSAFE_RAW.
    FILTER_UNSAFE_RAW (integer)
    ID of "unsafe_raw" filter.
    FILTER_SANITIZE_STRING (integer)
    ID of "string" filter.
    FILTER_SANITIZE_STRIPPED (integer)
    ID of "stripped" filter.
    FILTER_SANITIZE_ENCODED (integer)
    ID of "encoded" filter.
    FILTER_SANITIZE_SPECIAL_CHARS (integer)
    ID of "special_chars" filter.
    FILTER_SANITIZE_EMAIL (integer)
    ID of "email" filter.
    FILTER_SANITIZE_URL (integer)
    ID of "url" filter.
    FILTER_SANITIZE_NUMBER_INT (integer)
    ID of "number_int" filter.
    FILTER_SANITIZE_NUMBER_FLOAT (integer)
    ID of "number_float" filter.
    FILTER_SANITIZE_MAGIC_QUOTES (integer)
    ID of "magic_quotes" filter.
    FILTER_CALLBACK (integer)
    ID of "callback" filter.
    FILTER_FLAG_ALLOW_OCTAL (integer)
    Allow octal notation (0[0-7]+) in "int" filter.
    FILTER_FLAG_ALLOW_HEX (integer)
    Allow hex notation (0x[0-9a-fA-F]+) in "int" filter.
    FILTER_FLAG_STRIP_LOW (integer)
    Strip characters with ASCII value less than 32.
    FILTER_FLAG_STRIP_HIGH (integer)
    Strip characters with ASCII value greater than 127.
    FILTER_FLAG_ENCODE_LOW (integer)
    Encode characters with ASCII value less than 32.
    FILTER_FLAG_ENCODE_HIGH (integer)
    Encode characters with ASCII value greater than 127.
    FILTER_FLAG_ENCODE_AMP (integer)
    Encode &.
    FILTER_FLAG_NO_ENCODE_QUOTES (integer)
    Don't encode ' and ".
    FILTER_FLAG_EMPTY_STRING_NULL (integer)
    (No use for now.)
    FILTER_FLAG_ALLOW_FRACTION (integer)
    Allow fractional part in "number_float" filter.
    FILTER_FLAG_ALLOW_THOUSAND (integer)
    Allow thousand separator (,) in "number_float" filter.
    FILTER_FLAG_ALLOW_SCIENTIFIC (integer)
    Allow scientific notation (e, E) in "number_float" filter.
    FILTER_FLAG_PATH_REQUIRED (integer)
    Require path in "validate_url" filter.
    FILTER_FLAG_QUERY_REQUIRED (integer)
    Require query in "validate_url" filter.
    FILTER_FLAG_IPV4 (integer)
    Allow only IPv4 address in "validate_ip" filter.
    FILTER_FLAG_IPV6 (integer)
    Allow only IPv6 address in "validate_ip" filter.
    FILTER_FLAG_NO_RES_RANGE (integer)
    Deny reserved addresses in "validate_ip" filter.
    FILTER_FLAG_NO_PRIV_RANGE (integer)
    Deny private addresses in "validate_ip" filter.

    User Contributed Notes

    sixd at php dot net
    5 years ago
    Rasmus added FILTER_SANITIZE_FULL_SPECIAL_CHARS to PHP 5.3.3.  See
    http://svn.php.net/viewvc/php/php-src/branches/PHP_5_3/
    ext/filter/filter.c?r1=297245&r2=297244&pathrev=297245
    His earlier commit to the PHP source code trunk commented that this "Added the full htmlspecialchars() functionality which includes utf-8 validation as a default filter."
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