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 3.0.161

Twitter updates

  • New ProcessWire query expansion search operators can now add automatic word inflections and lemmatisation, enabling you to build even smarter search engines with ProcessWire. More
    3 July 2020
  • ProcessWire 3.0.161 adds support for selector operator stacking, enabling you automatically broaden searches in a single pages.find() call— More
    26 June 2020
  • ProcessWire 3.0.160 adds powerful new text-searching operators, bringing a new level of power to page-finding API calls, especially when it comes to search engine type queries. Post also includes a demo search engine where you can test it all out live— More
    19 June 2020

Latest news

  • ProcessWire Weekly #321
    In the 321st issue of ProcessWire Weekly we're going to check out the latest core updates, introduce two new third party modules, and check out a brand new site of the week. Read on!
    Weekly.pw / 4 July 2020
  • Powerful new text-searching abilities in 3.0.160
    In ProcessWire 3.0.160 we’ve got some major upgrades and additions to our text-search abilities. This brings a whole new level of power to $pages->find() and similar API calls, especially when it comes to search engine type queries.
    Blog / 19 June 2020
  • Subscribe to weekly ProcessWire news

“…building with ProcessWire was a breeze, I really love all the flexibility the system provides. I can’t imagine using any other CMS in the future.” —Thomas Aull