February 12, 2011 
Definition:
function wp_kses_bad_protocol_once($string, $allowed_protocols) {}
Sanitizes content from bad protocols and other characters.
This function searches for URL protocols at the beginning of $string, while handling whitespace and HTML entities.
Parameters
- string $string: Content to check for bad protocols
- string $allowed_protocols: Allowed protocols
Return values
returns:Sanitized content
Source code
function wp_kses_bad_protocol_once($string, $allowed_protocols) {
$string2 = preg_split( '/:|�*58;|�*3a;/i', $string, 2 );
if ( isset($string2[1]) && ! preg_match('%/\?%', $string2[0]) )
$string = wp_kses_bad_protocol_once2( $string2[0], $allowed_protocols ) . trim( $string2[1] );
return $string;
}
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