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: Fails validation for the IPv6 addresses starting with |
FILTER_FLAG_NO_RES_RANGE | FILTER_VALIDATE_IP | Fails validation for the following reserved IPv4 ranges: Fails validation for the following reserved IPv6 ranges: 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 |
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. |
Version | Description |
---|---|
8.2.0 | FILTER_FLAG_GLOBAL_RANGE as a flag to FILTER_VALIDATE_IP has been added. |
7.3.0 | The explicit usage of FILTER_FLAG_SCHEME_REQUIRED and FILTER_FLAG_HOST_REQUIRED has been deprecated. |
7.1.0 | FILTER_FLAG_EMAIL_UNICODE has been added. |