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このドキュメントでは、 php中国語ネットマニュアル リリース
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_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_SANITIZE_RAW | Encodes all characters with a numerical value <32. |
FILTER_FLAG_ENCODE_HIGH | FILTER_SANITIZE_ENCODED ,
FILTER_SANITIZE_SPECIAL_CHARS ,
FILTER_SANITIZE_STRING ,
FILTER_SANITIZE_RAW | Encodes all characters with a numerical value >127. |
FILTER_FLAG_ENCODE_AMP | FILTER_SANITIZE_STRING ,
FILTER_SANITIZE_RAW | Encodes ampersands (&). |
FILTER_NULL_ON_FAILURE | FILTER_VALIDATE_BOOLEAN |
Returns NULL for unrecognized boolean 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_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, 192.0.2.0/24 and 224.0.0.0/4. This flag does not apply to IPv6 addresses. |
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. |
[#1] bohwaz [2012-02-06 00:52:16]
Please note that FILTER_FLAG_HOST_REQUIRED and FILTER_FLAG_SCHEME_REQUIRED have disappeared. They were previously mentioned in the constants page but it seems that host and scheme are now required by default for the validate_url filter.
[#2] php dot net at ewood dot users dot cementhorizon dot com [2010-10-19 16:42:13]
In order to filter on loopback addresses try this :
<?php
function FILTER_FLAG_NO_LOOPBACK_RANGE($value) {
// Fails validation for the following loopback IPv4 range: 127.0.0.0/8
// This flag does not apply to IPv6 addresses
return filter_var($value, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6) ? $value :
(((ip2long($value) & 0xff000000) == 0x7f000000) ? FALSE : $value);
}
$var = filter_var('127.0.0.1', FILTER_CALLBACK, array('options' => 'FILTER_FLAG_NO_LOOPBACK_RANGE'));
// Returns FALSE
$var = filter_var('74.125.19.103', FILTER_CALLBACK, array('options' => 'FILTER_FLAG_NO_LOOPBACK_RANGE'));
// Returns '74.125.19.103'
// To filter Private IP ranges and Loopback ranges
$var = filter_var('127.0.0.1', FILTER_VALIDATE_IP, FILTER_FLAG_NO_PRIV_RANGE)
&& filter_var('127.0.0.1', FILTER_CALLBACK, array('options' => 'FILTER_FLAG_NO_LOOPBACK_RANGE'));
// Returns FALSE
?>
(If someone wants to write in handling for the IPv6 loopback interface at "::1" go for it.)
-Gene Wood