$sanitizer->validate() method

Validate that value remains unchanged by given sanitizer method, or return null if not

If change is just a type conversion change or surrounding whitespace (that gets trimmed) then this is still considered valid.

Returns NULL or given $fallback value if value does not validate. Note that if results like 0, false or blank string are considered valid values, then this method can return them. So for cases like that you should compare the return value with NULL (or whatever your $fallback is).

things like 0 or false (if that is a valid value) compare the return value with null before assuming a value is not valid.

Available since version 3.0.125.

Example

$sanitizer->validate('abc', 'alpha'); // valid: returns 'abc'
$sanitizer->validate('abc123', 'alpha'); invalid: returns null

Usage

// basic usage
$mixed = $sanitizer->validate($value);

// usage with all arguments
$mixed = $sanitizer->validate($value, string $method = 'text', $fallback = null);

Arguments

NameType(s)Description
valuestring, int, array, float

Value to validate

method (optional)string

Saniatizer method name or CSV names combo

fallback (optional)

Return value

null mixed

Returns sanitized value if it validates or null (or given fallback) if value does not validate


$sanitizer methods and properties

API reference based on ProcessWire core version 3.0.125

Twitter updates

  • New post: This week we take a look at what’s in ProcessWire 3.0.126 which focuses largely on resolving issue reports, but also includes a handy new Page if() method— More
    15 February 2019
  • New post: ProcessWire 3.0.125 has several useful new Sanitizer methods & options, plus new ways to access them directly from the Input API variable. This makes handling user input even easier than before. Plus updates to our i18n functions & API docs— More
    25 January 2019
  • New post: In this week’s post, we’ll take a look a look at the new website and focus on some parts of it and how they were built. Then we’ll dive into the latest version of ProcessWire on the dev branch, version 3.0.124— More
    11 January 2019

Latest news

  • ProcessWire Weekly #249
    In the 249th issue of ProcessWire Weekly we're going to walk you through the latest core updates (ProcessWire 3.0.126), introduce a new third party module called Page Access Releasetime, and pick a new site of the week. Read on!
    Weekly.pw / 16 February 2019
  • ProcessWire 3.0.126 core updates
    This week we take a look at what’s in ProcessWire 3.0.126 which focuses largely on resolving issue reports, but also includes a handy new $page->if() method. 
    Blog / 15 February 2019
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