- List of filters for sanitization
-
-
-
- ID
- Name
- Flags
- Description
-
-
-
-
- FILTER_SANITIZE_EMAIL
- "email"
-
-
- Remove all characters except letters, digits and
- !#$%&'*+-=?^_`{|}~@.[].
-
-
-
- FILTER_SANITIZE_ENCODED
- "encoded"
-
- FILTER_FLAG_STRIP_LOW,
- FILTER_FLAG_STRIP_HIGH,
- FILTER_FLAG_STRIP_BACKTICK,
- FILTER_FLAG_ENCODE_LOW,
- FILTER_FLAG_ENCODE_HIGH
-
- URL-encode string, optionally strip or encode special characters.
-
-
- FILTER_SANITIZE_MAGIC_QUOTES
- "magic_quotes"
-
-
- Apply addslashes.
- (DEPRECATED as of PHP 7.3.0 and
- REMOVED as of PHP 8.0.0,
- use FILTER_SANITIZE_ADD_SLASHES instead.)
-
-
-
- FILTER_SANITIZE_ADD_SLASHES
- "add_slashes"
-
- Apply addslashes. (Available as of PHP 7.3.0)
-
-
- FILTER_SANITIZE_NUMBER_FLOAT
- "number_float"
-
- FILTER_FLAG_ALLOW_FRACTION,
- FILTER_FLAG_ALLOW_THOUSAND,
- FILTER_FLAG_ALLOW_SCIENTIFIC
-
-
- Remove all characters except digits, +- and
- optionally .,eE.
-
-
-
- FILTER_SANITIZE_NUMBER_INT
- "number_int"
-
-
- Remove all characters except digits, plus and minus sign.
-
-
-
- FILTER_SANITIZE_SPECIAL_CHARS
- "special_chars"
-
- FILTER_FLAG_STRIP_LOW,
- FILTER_FLAG_STRIP_HIGH,
- FILTER_FLAG_STRIP_BACKTICK,
- FILTER_FLAG_ENCODE_HIGH
-
-
- HTML-encode '"<>& and characters with
- ASCII value less than 32, optionally strip or encode other special
- characters.
-
-
-
- FILTER_SANITIZE_FULL_SPECIAL_CHARS
- "full_special_chars"
-
- FILTER_FLAG_NO_ENCODE_QUOTES
-
-
- Equivalent to calling htmlspecialchars with ENT_QUOTES set. Encoding quotes can
- be disabled by setting FILTER_FLAG_NO_ENCODE_QUOTES. Like htmlspecialchars, this
- filter is aware of the default_charset and if a sequence of bytes is detected that
- makes up an invalid character in the current character set then the entire string is rejected resulting in a 0-length string.
- When using this filter as a default filter, see the warning below about setting the default flags to 0.
-
-
-
- FILTER_SANITIZE_STRING
- "string"
-
- FILTER_FLAG_NO_ENCODE_QUOTES,
- FILTER_FLAG_STRIP_LOW,
- FILTER_FLAG_STRIP_HIGH,
- FILTER_FLAG_STRIP_BACKTICK,
- FILTER_FLAG_ENCODE_LOW,
- FILTER_FLAG_ENCODE_HIGH,
- FILTER_FLAG_ENCODE_AMP
-
-
- Strip tags and HTML-encode double and single quotes, optionally strip
- or encode special characters. Encoding quotes can be
- disabled by setting FILTER_FLAG_NO_ENCODE_QUOTES.
- (Deprecated as of PHP 8.1.0,
- use htmlspecialchars instead.)
-
-
-
- FILTER_SANITIZE_STRIPPED
- "stripped"
-
-
- Alias of "string" filter.
- (Deprecated as of PHP 8.1.0,
- use htmlspecialchars instead.)
-
-
-
- FILTER_SANITIZE_URL
- "url"
-
-
- Remove all characters except letters, digits and
- $-_.+!*'(),{}|\\^~[]`<>#%";/?:@&=.
-
-
-
- FILTER_UNSAFE_RAW
- "unsafe_raw"
-
- FILTER_FLAG_STRIP_LOW,
- FILTER_FLAG_STRIP_HIGH,
- FILTER_FLAG_STRIP_BACKTICK,
- FILTER_FLAG_ENCODE_LOW,
- FILTER_FLAG_ENCODE_HIGH,
- FILTER_FLAG_ENCODE_AMP
-
-
- Do nothing, optionally strip or encode special characters. This
- filter is also aliased to FILTER_DEFAULT.
-
-
-
-
-
-
-
-
- When using one of these filters as a default filter either through your ini file
- or through your web server's configuration, the default flags is set to
- FILTER_FLAG_NO_ENCODE_QUOTES. You need to explicitly set
- filter.default_flags to 0 to have quotes encoded by default. Like this:
-
- Configuring the default filter to act like htmlspecialchars
-
-
-
-
-
-
-
-
- &reftitle.changelog;
-
-
-
-
-
- &Version;
- &Description;
-
-
-
-
- 8.1.0
-
- FILTER_SANITIZE_STRING and
- FILTER_SANITIZE_STRIPPED have been deprecated.
-
-
-
- 8.0.0
-
- FILTER_SANITIZE_MAGIC_QUOTES has been removed.
-
-
-
- 7.3.0
-
- FILTER_SANITIZE_ADD_SLASHES was added as a
- replacement for FILTER_SANITIZE_MAGIC_QUOTES
-
-
-
- 7.3.0
-
- FILTER_SANITIZE_MAGIC_QUOTES has been deprecated.
-
-
-
-
-
-
-
-
-
-
-
-
-
- 其它过滤器
-
-
- List of miscellaneous filters
-
-
-
- ID
- Name
- Options
- Flags
- Description
-
-
-
-
- FILTER_CALLBACK
- "callback"
- callable function or method
- All flags are ignored
- Call user-defined function to filter data.
-
-
-
-
-
-
-
-
-
-
- 过滤器 flag
-
-
-
- List of filter flags
-
-
-
- ID
- Used with
- Description
-
-
-
-
- FILTER_FLAG_STRIP_LOW
-
- FILTER_SANITIZE_ENCODED,
- FILTER_SANITIZE_SPECIAL_CHARS,
- FILTER_SANITIZE_STRING,
- FILTER_UNSAFE_RAW
-
-
- Strips characters that have a numerical value <32.
-
-
-
- FILTER_FLAG_STRIP_HIGH
-
- FILTER_SANITIZE_ENCODED,
- FILTER_SANITIZE_SPECIAL_CHARS,
- FILTER_SANITIZE_STRING,
- FILTER_UNSAFE_RAW
-
-
- Strips characters that have a numerical value >127.
-
-
-
- FILTER_FLAG_STRIP_BACKTICK
-
- FILTER_SANITIZE_ENCODED,
- FILTER_SANITIZE_SPECIAL_CHARS,
- FILTER_SANITIZE_STRING,
- FILTER_UNSAFE_RAW
-
-
- Strips backtick characters.
-
-
-
- FILTER_FLAG_ALLOW_FRACTION
-
- FILTER_SANITIZE_NUMBER_FLOAT
-
-
- Allows a period (.) as a fractional separator in
- numbers.
-
-
-
- FILTER_FLAG_ALLOW_THOUSAND
-
- FILTER_SANITIZE_NUMBER_FLOAT,
- FILTER_VALIDATE_FLOAT
-
-
- Allows a comma (,) as a thousands separator in
- numbers.
-
-
-
- FILTER_FLAG_ALLOW_SCIENTIFIC
-
- FILTER_SANITIZE_NUMBER_FLOAT
-
-
- Allows an e or E for scientific
- notation in numbers.
-
-
-
- FILTER_FLAG_NO_ENCODE_QUOTES
-
- FILTER_SANITIZE_STRING
-
-
- If this flag is present, single (') and double
- (") quotes will not be encoded.
-
-
-
- FILTER_FLAG_ENCODE_LOW
-
- FILTER_SANITIZE_ENCODED,
- FILTER_SANITIZE_STRING,
- FILTER_UNSAFE_RAW
-
-
- Encodes all characters with a numerical value <32.
-
-
-
- FILTER_FLAG_ENCODE_HIGH
-
- FILTER_SANITIZE_ENCODED,
- FILTER_SANITIZE_SPECIAL_CHARS,
- FILTER_SANITIZE_STRING,
- FILTER_UNSAFE_RAW
-
-
- Encodes all characters with a numerical value >127.
-
-
-
- FILTER_FLAG_ENCODE_AMP
-
- FILTER_SANITIZE_STRING,
- FILTER_UNSAFE_RAW
-
-
- Encodes ampersands (&).
-
-
-
- FILTER_NULL_ON_FAILURE
-
- any FILTER_VALIDATE_*
-
-
- Returns &null; for unrecognized values.
-
-
-
- FILTER_FLAG_ALLOW_OCTAL
-
- FILTER_VALIDATE_INT
-
-
- Regards inputs starting with a zero (0) as octal
- numbers. This only allows the succeeding digits to be
- 0-7.
-
-
-
- FILTER_FLAG_ALLOW_HEX
-
- FILTER_VALIDATE_INT
-
-
- Regards inputs starting with 0x or
- 0X as hexadecimal numbers. This only allows
- succeeding characters to be a-fA-F0-9.
-
-
-
- FILTER_FLAG_EMAIL_UNICODE
-
- FILTER_VALIDATE_EMAIL
-
-
- Allows the local part of the email address to contain Unicode characters.
-
-
-
- FILTER_FLAG_IPV4
-
- FILTER_VALIDATE_IP
-
-
- Allows the IP address to be in IPv4 format.
-
-
-
- FILTER_FLAG_IPV6
-
- FILTER_VALIDATE_IP
-
-
- Allows the IP address to be in IPv6 format.
-
-
-
- FILTER_FLAG_NO_PRIV_RANGE
-
- FILTER_VALIDATE_IP
-
-
-
- Fails validation for the following private IPv4 ranges:
- 10.0.0.0/8, 172.16.0.0/12 and
- 192.168.0.0/16.
-
-
- Fails validation for the IPv6 addresses starting with
- FD or FC.
-
-
-
-
- FILTER_FLAG_NO_RES_RANGE
-
- FILTER_VALIDATE_IP
-
-
-
- Fails validation for the following reserved IPv4 ranges:
- 0.0.0.0/8, 169.254.0.0/16,
- 127.0.0.0/8 and 240.0.0.0/4.
-
-
- Fails validation for the following reserved IPv6 ranges:
- ::1/128, ::/128,
- ::ffff:0:0/96 and fe80::/10.
-
-
- These are the ranges that are marked as Reserved-By-Protocol in
- RFC 6890.
-
-
-
-
- FILTER_FLAG_GLOBAL_RANGE
-
- FILTER_VALIDATE_IP
-
-
-
- Fails validation for non global IPv4/IPv6 ranges as found in
- RFC 6890 with the
- Global attribute being False.
-
-
-
-
- FILTER_FLAG_SCHEME_REQUIRED
-
- FILTER_VALIDATE_URL
-
-
- Requires the URL to contain a scheme part.
-
-
-
- FILTER_FLAG_HOST_REQUIRED
-
- FILTER_VALIDATE_URL
-
-
- Requires the URL to contain a host part.
-
-
-
- FILTER_FLAG_PATH_REQUIRED
-
- FILTER_VALIDATE_URL
-
-
- Requires the URL to contain a path part.
-
-
-
- FILTER_FLAG_QUERY_REQUIRED
-
- FILTER_VALIDATE_URL
-
-
- Requires the URL to contain a query string.
-
-
-
- FILTER_REQUIRE_SCALAR
-
-
-
- Requires the value to be scalar.
-
-
-
- FILTER_REQUIRE_ARRAY
-
-
-
- Requires the value to be an array. Filter given will be applied to each
- scalar entry of the array.
-
-
-
- FILTER_FORCE_ARRAY
-
-
-
- If the value is a scalar, it is treated as array with the scalar value
- as only element.
-
-
-
-
-