Cams chatshow online room - Validating url

Tested on PHP version 7.1 Contrary to what documentation implies, the FILTER_NULL_ON_FAILURE seem to affect any validation filter, not just FILTER_VALIDATE_BOOLEAN.

Of course if you were to use FILTER_VALIDATE_FLOAT it would just return that the input is not valid. in the domain part, a comment in the source code (in ext/filter/logical_filters.c) justifies this rejection thus: * The regex below is based on a regex by Michael Rushton. I changed it to only consider routeable * addresses as valid.

Michael's regex considers [email protected] a valid address * which conflicts with section 2.3.5 of RFC 5321 which states that: * * Only resolvable, fully-qualified domain names (FQDNs) are permitted * when domain names are used in SMTP.

The full code can be seen over on my Github page and has everything needed to see the example live In this post I’m going to show how we can go about creating a small app that allows the user to upload an image via an URL.

The user will be presented with a single form field in which they can enter an image URL: Both the URL and the corresponding image (if present) will be validated.

If FILTER_NULL_ON_FAILURE is not used then NULL is returned when the variable name is not set in the external variable array, TRUE is returned for "1", "true", "on" and "yes" and FALSE is returned for everything else.

FILTER_FLAG_QUERY_REQUIRED is failing URLs that are encoded e.g. q=big So anything more than one word encoded fails.

If you want to browse the code in full, it can be seen on my Github page.

We first look at the URL that the user has supplied and make sure that it ends with a valid image-like extension: Next we check whether or not the resource at the URL supplied by the user actually exists.

The description for FILTER_VALIDATE_URL seems incorrect/misleading. "Beware a valid URL may not specify the HTTP protocol" implies a valid URL cannot specify the HTTP protocol.

I think "Beware a valid URL need not specify..." would be better.

It could be integrated into a popup dialog that allows users to upload images from Google image searches, traditional uploads, ajax multi-uploads as well as URLs.

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