Selectors class

Processes a selector string into a WireArray of Selector objects.

This Selectors class is used internally by ProcessWire to provide selector string (and array) matching throughout the core.

$selectors = new Selectors("sale_price|retail_price>100, currency=USD|EUR");
if($selectors->matches($page)) {
  // selector string matches the given $page (which can be any Wire-derived item)
}
// iterate and display what's in this Selectors object
foreach($selectors as $selector) {
  echo "<p>";
  echo "Field(s): " . implode('|', $selector->fields) . "<br>";
  echo "Operator: " . $selector->operator . "<br>";
  echo "Value(s): " . implode('|', $selector->values) . "<br>";
  echo "</p>";
}

Click any linked item for full usage details and examples. Hookable methods are indicated with the icon. In addition to those shown below, the Selectors class also inherits all the methods and properties of: WireArray and Wire.

Show class?             Show args?        

Advanced

Static helpers

Static helper methods useful in analyzing selector strings outside of this class.

NameReturnSummary 
Selectors::arrayToKeyValueString(array $a)
stringGiven an assoc array, convert to a key=value selector-style string 
Selectors::getOperatorChars()
arrayReturn array of all valid operator characters 
Selectors::getOperatorType(string $operator)
bool stringReturn a string indicating the type of operator that it is, or false if not an operator 
Selectors::getOperators()
array string intGet all operators allowed by selectors 
Selectors::getReservedChars()
arrayReturn array of other characters that have meaning in a selector outside of operators 
Selectors::getSelectorByOperator(string $operator)
Selector int string falseGiven an operator, return Selector instance (or other requested Selector property) 
Selectors::isOperator(string $operator)
bool stringReturns true if given string is a recognized operator, or false if not 
Selectors::keyValueStringToArray(string $s)
arraySimple "a=b, c=d" selector-style string conversion to associative array, for fast/simple needs 
Selectors::stringHasOperator(string $str)
boolDoes the given string have an operator in it? 
Selectors::stringHasSelector(string $str)
boolIs the given string a Selector string? 

Additional methods and properties

In addition to the methods and properties above, Selectors also inherits the methods and properties of these classes:

API reference based on ProcessWire core version 3.0.168

Twitter updates

  • There’s a new modules directory on the ProcessWire site now up and running. In this post we’ll cover a few details about what’s changed and what’s new—More
    20 November 2020
  • ProcessWire 3.0.168 core updates — More
    26 October 2020
  • This week a 2nd new module for processing Stripe payments has been added to FormBuilder. Unlike our other Stripe Inputfield, this new one supports 3D Secure (SCA) payments. We’ll take a closer look at it in this post, plus a live demo— More
    16 October 2020

Latest news

  • ProcessWire Weekly #341
    In the 341st issue of ProcessWire Weekly we're going to check out the latest processwire.com blog post, introduce upcoming commercial module called NiftyPasswordsPlus, and check out a brand new site of the week. Read on!
    Weekly.pw / 21 November 2020
  • New ProcessWire modules directory
    There’s a new modules directory on the ProcessWire site now up and running. In this post we’ll cover a few details about what’s changed and what’s new.
    Blog / 20 November 2020
  • Subscribe to weekly ProcessWire news

“Indeed, if ProcessWire can be considered as a CMS in its own right, it also offers all the advantages of a CMF (Content Management Framework). Unlike other solutions, the programmer is not forced to follow the proposed model and can integrate his/her ways of doing things.” —Guy Verville, Spiria Digital Inc.