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Informations about the package param-string-placeholders

Class description

A template string with a configurable placeholder delimiters. Can take forms like, eg.:

The placeholder structure is: E* O P C, where:

None of the O,C,E can be empty ''.

The placeholders are passed as a constructor arguments: ($template, $open, $close, $escape). If any of $open, $close or $escape is null, the default value for the class is used (class-wide defaults can be set with ::setDefaultDelimiters($open, $close, $escape)).

The string is scanned for the closest non-empty pairs of OPEN/CLOSE.

OPEN directly followed by CLOSE is not treated like a placeholder, but taken verbatim.

The string between the O/C pair is the PARAM name. It can contain anything, except, of cource, OPEN or CLOSE strings.

If the placeholder is directly preceded with 1 or more ESCAPE strings, any two of them are converted to single one. If the E string count is odd, the placeholder is escaped and taken as part of the string in the form OPC, without the last ESC.

Examples

With O:'{', C:'}', E:'!'

So the template

'aaa{}{{P1}bbb!!!{P2}ccc!!{P3}ddd'

is parsed as:

'aaa{}{', @ P1, 'bbb!{P2}ccc!', @ P3, 'ddd'

With O:'%', C:'%', E:'%'

Methods

public function __construct(string $template, ?string $open = null, ?string $close = null, ?string $escape = null)

If any of $open, $close or $escape is null, the default value for the class is used.

public function getPieces(): array

A debugging function - returns the pieces, to which the template string is split, with the placeholder pieces marked as '@ PHName'.

public function getDelimiters() : array

Returns array ['open'=>..., 'close'=>..., 'escape'=>...]

public static function getDefaultDelimiters() : array

Returns array - the default delimiters for the class: ['open'=>..., 'close'=>..., 'escape'=>...]

public static function setDefaultDelimiters(?string $open = null, ?string $close = null, ?string $escape = null) : void

Set the default delimiters for the entire class. If any of them is null, use the hardcoded default.

public function getTemplate() : string (ParamStringInterface)

Get the template string passed to the constructor

public function withParam(string $name, $value) : self (ParamStringInterface)

Clone the object and set the named param value.

public function getParam(string $name) (ParamStringInterface)

Get a parameter by name

public function withParams(array $params) : self (ParamStringInterface)

Clone the object and set multiple params at once.

public function getParams() : array (ParamStringInterface)

Get a snapshot of the parameters

public function __toString() : string (ParamStringInterface)

Complete example

All versions of param-string-placeholders with dependencies

PHP Build Version
Package Version
Requires azbosakov/param-string-interface Version ^1.0
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