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Validating a url

Below are some common tasks in Word Press and how they should be sanitized.

There are several different philosophies about how validation should be done. Accept data only from a finite list of known and trusted values.

When comparing untrusted data against the whitelist, it's important to make sure that strict type checking is used.

Sanitizes a html classname to ensure it only contains valid characters.

Strips the string down to A-Z,a-z,0-9,'-' if this results in an empty string then it will return the alternative value supplied.

This way you can always be sure that your data is properly validated/escaped and you don't need to remember if the variable has been previously validated.

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Note that the kses system can be resource-intensive, and should therefore not be run as an output sanitization filter directly, but as a filter to data after it has been input and processed, before it is saved in the database.

FILTER_VALIDATE_EMAIL is discarding valid e-mail addresses containing IDN.

Since there are real, live IDNs on the Internet, that means the filtered output is too strict, leading to false negatives.

If you’re not familiar with Maven, refer to Building Java Projects with Maven. This makes it easy to ship, version, and deploy the service as an application throughout the development lifecycle, across different environments, and so forth.

Microsoft is conducting an online survey to understand your opinion of the Msdn Web site.

Comments Validating a url

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