PhpStorm 2019.2 Help

Search templates, filters, and script constraints

When you construct a pattern for a structural search you are basically writing a script. To simplify your scripting process, PhpStorm offers you a list of predefined search templates that you can use as prototypes for your search pattern.

Existing search templates for PHP

On how to access the list of the existing search and replace templates, see the structural search and replace section.

A valid search or replacement template represents one of the following supported languages constructs:

  • Expression, for example "John" . " " . "Doe"

  • Statement, or sequence of statements, for example $people[] = new Person('Trillian');

  • Class designator, for example class Engine implements IEngine

  • Line or block comments, for example /** Created in PhpStorm */.

In search templates, the following simplifications can be used:

  • Method body can be omitted.

  • Short class names (instead of fully qualified names) are used in the templates and constraint fields.

  • Using class $Class$ as a template results in finding anonymous classes as well.

  • Templates for comments and documentation comments should contain variables and constructs with correct comment and PHPDoc/JSDoc syntax.

Each search or replace template consists of variables $variable_name$ to which you can add a condition (filter) to narrow your search results. Filters depend on a variable in your search template.

A search template preview

Count filter

The Count filter specifies a number of occurrences.

For example, in the class $a$ {public function $b$()} search pattern, for $b$ variable specify min and max numbers in the Count filter field. To set the unlimited maximum count, provide an empty value in the filter field.

Count filter

PhpStorm adds [0,∞] to the variable and searches for the specified range of numbers.

Reference filter

The Reference filter lets you reference some other search template in the variable.

The reference will always contain the name of a preconfigured or saved pattern, and you can use auto-completion to fill out this field.

For example, you can define a search template for locating static methods of a class, and then reference it in another template to detect the erroneous instance calls to such static methods.

Reference filter

Type filter

The Type filter adds a type of the value or expression that is expected for the specified variable.

Use the following filter values to locate variables of the corresponding types:

  • string
  • int or integer

  • double or float

  • boolean
  • array
  • null

To locate instances of a particular class, provide its FQN including the leading \ as the Type filter value.

For example, for the $b$ variable, type \ExampleClass in the Type filter field.

PhpStorm searches for ExampleClass instantiations.

Find tool window the results for class instantiations

Text filter

The Text filter checks the variable against regular expressions or plain text.

For example, to detect explicit magic method calls, use the $a$->$b$() template and set the Text filter for the $b$ variable to the ^__.+$ regular expression.

Text filter

Script constraints

The Script filter adds Groovy script constraints to the search pattern. Script constraints are used when you search for certain language constructs.

For example, constructors with the specified number of parameters, or members with the specified visibility modifiers.

All variables used in a pattern can be accessed from script constraints. When you add a script constraint to your variable, PhpStorm matches it against the PSI tree, this variable is in fact a node in the PSI tree.

Let's say, you have a variable that matches a method, a toString() method. Then this variable is actually a PsiMethod node. Retrieving variable.parent will produce a PsiClass node, and so forth. variable.text then will give you the entire text of the method. If you just need the name of the method, you can use variable.name.

In another case the structural search and replace variable may match some expression, for example, a reference to a variable, a PsiReferenceExpression. An expression has no name of course, but retrieving the entire text of the expression, will give you the name of the variable to which it is referring.

You can check the syntax of script constraints that are used in the following existing templates:

  • sample method invocation with a constant parameter

  • classes

  • classes with parameterless constructors

  • static fields that are not final

  • interface that is not implemented or extended

  • fields/variables read

  • fields/variables with given name pattern updated

Last modified: 23 August 2019

See Also