wp_kses_check_attr_val [ WordPress Function ]
wp_kses_check_attr_val ( $value, $vless, $checkname, $checkvalue )
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| Returns: |
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| Defined at: |
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Soorgelijke functies: wp_kses_attr, wp_kses_data, wp_kses_hair, wp_kses_array_lc, wp_terms_checklist
Performs different checks for attribute values.
The currently implemented checks are "maxlen", "minlen", "maxval", "minval" and "valueless".
Source
<?php
function wp_kses_check_attr_val($value, $vless, $checkname, $checkvalue) {
$ok = true;
switch (strtolower($checkname)) {
case 'maxlen' :
# The maxlen check makes sure that the attribute value has a length not
# greater than the given value. This can be used to avoid Buffer Overflows
# in WWW clients and various Internet servers.
if (strlen($value) > $checkvalue)
$ok = false;
break;
case 'minlen' :
# The minlen check makes sure that the attribute value has a length not
# smaller than the given value.
if (strlen($value) < $checkvalue)
$ok = false;
break;
case 'maxval' :
# The maxval check does two things: it checks that the attribute value is
# an integer from 0 and up, without an excessive amount of zeroes or
# whitespace (to avoid Buffer Overflows). It also checks that the attribute
# value is not greater than the given value.
# This check can be used to avoid Denial of Service attacks.
if (!preg_match('/^\s{0,6}[0-9]{1,6}\s{0,6}$/', $value))
$ok = false;
if ($value > $checkvalue)
$ok = false;
break;
case 'minval' :
# The minval check makes sure that the attribute value is a positive integer,
# and that it is not smaller than the given value.
if (!preg_match('/^\s{0,6}[0-9]{1,6}\s{0,6}$/', $value))
$ok = false;
if ($value < $checkvalue)
$ok = false;
break;
case 'valueless' :
# The valueless check makes sure if the attribute has a value
# (like <a href="blah">) or not (<option selected>). If the given value
# is a "y" or a "Y", the attribute must not have a value.
# If the given value is an "n" or an "N", the attribute must have one.
if (strtolower($checkvalue) != $vless)
$ok = false;
break;
} # switch
return $ok;
}
?>
Examples [ wp-snippets.com ]
Top Google zoekresultaten
- 常用函数-wp_kses_check_attr_val() | WordPress啦!
<?php wp_kses_check_attr_val( $value, $vless, $checkname, $checkvalue ) ?> ... wp_kses_check_attr_val()位于wp-includes/kses.php中。
www.wordpress.la - Docs for page kses.php
bool wp_kses_check_attr_val (string $value, string $vless, string $checkname, mixed $checkvalue). string $value: Attribute value; string $vless: Whether the ...
phpdoc.ftwr.co.uk - Docs for page kses.php - WordPress.org
bool wp_kses_check_attr_val (string $value, string $vless, string $checkname, mixed $checkvalue). string $value: Attribute value; string $vless: Whether the ...
phpdoc.wordpress.org - PHPXRef 0.7 : WordPress (latest release) : Detail view of kses.php
wp_kses_check_attr_val() wp_kses_bad_protocol() wp_kses_no_null() wp_kses_stripslashes() wp_kses_array_lc() wp_kses_js_entities() wp_kses_html_error() ...
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