PHPackages perryflynn/perrys-lambda - PHPackages - PHPackages [Skip to content](#main-content)[PHPackages](/)[Directory](/)[Categories](/categories)[Trending](/trending)[Leaderboard](/leaderboard)[Changelog](/changelog)[Analyze](/analyze)[Collections](/collections)[Log in](/login)[Sign up](/register) 1. [Directory](/) 2. / 3. [Parsing & Serialization](/categories/parsing) 4. / 5. perryflynn/perrys-lambda AbandonedArchivedLibrary[Parsing & Serialization](/categories/parsing) perryflynn/perrys-lambda ======================== Implementation of lambda expressions for PHP. 0.2.1(8y ago)2385[3 issues](https://github.com/perryflynn/PerrysLambda/issues)1MITPHPPHP >=5.5.0 Since Apr 15Pushed 8y ago1 watchersCompare [ Source](https://github.com/perryflynn/PerrysLambda)[ Packagist](https://packagist.org/packages/perryflynn/perrys-lambda)[ Docs](https://github.com/perryflynn/PerrysLambda)[ RSS](/packages/perryflynn-perrys-lambda/feed)WikiDiscussions master Synced 3w ago READMEChangelogDependencies (2)Versions (6)Used By (1) This project tries to implement C# .NET lambda expressions in PHP. [![Build Status](https://camo.githubusercontent.com/6a7c1e75c91d8bf8bf96c4f1134359ecb8a5ccb676aef0be34bb3d949eca10ab/68747470733a2f2f7472617669732d63692e6f72672f7065727279666c796e6e2f5065727279734c616d6264612e7376673f6272616e63683d6d6173746572)](https://travis-ci.org/perryflynn/PerrysLambda) [![Coverage Status](https://camo.githubusercontent.com/acf814a39e1731f25f10d20242b2df04dde9ffc267c7c7a8797f487cec552c49/68747470733a2f2f636f766572616c6c732e696f2f7265706f732f6769746875622f7065727279666c796e6e2f5065727279734c616d6264612f62616467652e7376673f6272616e63683d6d6173746572)](https://coveralls.io/github/perryflynn/PerrysLambda?branch=master) Status ------ [](#status) In development, semi-stable API. Composer -------- [](#composer) [Packagegist](https://packagist.org/packages/perryflynn/perrys-lambda) ``` composer require perryflynn/perrys-lambda ``` Features -------- [](#features) - Implements many C# .NET like lambda expressions - Support for auto conversion of records in custom objects - Support for iteation and foreach - Support for [generator](http://php.net/manual/en/language.generators.syntax.php) (helps with call-by-reference in loops) - Helper classes for filesystem access - Helper classes for CSV file parsing Lambda methods -------------- [](#lambda-methods) MethodDescription\*OrDefaultDefine return value if expression has no hit, available for many methods`first`Get the first record`last`Get the last record`single`Get the single record, if `count!=0`, throw exception`take`Get the first `X` records`skip`Skip the first `X` records`where`Filter records by `callable` expression`whereFirst`Get first record matching the `callable` expression`groupby`Group records by `callable` expression`distrinct`Eliminate duplicate records bei `callable` expression`intersect`Returns the intersection of two ArrayList's`except`Returns the bidirectional diffrence of two ArrayList's`any`Returns true if `callable` expression returns at least one record `true``all`Returns true if `callable` expression returns for all records `true``select`Get an `array` of the values returned by `callable` expression`selectMany`Get an `array` of all values, arrays will be merged`joinString`Join a string from values returned by `callable` expression`each`Execute `callable` expression on each record`sum`Get the sum of numberic return values from `callable` expression`min`Get the smallest of numberic return values from `callable` expression`max`Get the biggest of numberic return values from `callable` expression`avg`Get the average of numberic return values from `callable` expression`order`Start sorting, begin ascending, more possible by `thenBy` / `thenByDesc``orderDesc`Start sorting, begin descending, more possible by `thenBy` / `thenByDesc`Basic usage ----------- [](#basic-usage) ``` $basic = new \PerrysLambda\ArrayList(array(1,2,3,4,5,6,7,8,9)); $basic->where(function($n) { return $nwhere(function($n) { return $nsum(); // Returns 6 ``` Basic usage with ObjectArray and Strings instead of callables ------------------------------------------------------------- [](#basic-usage-with-objectarray-and-strings-instead-of-callables) ``` $data = array( array('name'=>'Frank', age=>12), array('name'=>'Gene', age=>42), array('name'=>'Jessie', age=>31), array('name'=>'Carl', age=>55), ); $list = \PerrysLambda\ArrayList::asObjectArray($data); $list->select('age')->sum(); // Returns 140 $list->where(function($v) { return $v->age > 40; })->select('age')->sum(); // Returns 97 ``` Deserialize / Serialize ----------------------- [](#deserialize--serialize) - Deserialize json data - Modify data - Serialize again into json data - Display modified json data ``` // examples/serialize.php use PerrysLambda\ArrayList; use PerrysLambda\ObjectArray; use PerrysLambda\IArrayable; use PerrysLambda\Converter\ItemConverter; use PerrysLambda\Serializer\Serializer; use PerrysLambda\Serializer\DateTimeSerializer; use PerrysLambda\Serializer\BooleanSerializer; use PerrysLambda\Converter\ListConverter; // Testdata $rawstring = setFieldSerializers(array( "barfoo" => DateTimeSerializer::fromIsoFormat(), "foobar" => new BooleanSerializer(), )); // Create converter $conv = new ListConverter(); $conv->setItemConverter($fieldconverter); $conv->setArraySource($rawlines); // Load raw data into ArrayList $list = new ArrayList($conv); // Modify data $list ->where(function($v) { return $v->foobar===true; }) ->each(function($v) { $v->foo = $v->foo+1; }); // Serialize modified data $serlines = $list->serialize(); var_dump($serlines); ``` More examples ------------- [](#more-examples) [See the unit tests](test/) ### Health Score 22 — LowBetter than 21% of packages Maintenance0 Infrequent updates — may be unmaintained Popularity16 Limited adoption so far Community9 Small or concentrated contributor base Maturity52 Maturing project, gaining track record Bus Factor1 Top contributor holds 100% of commits — single point of failure How is this calculated?**Maintenance (25%)** — Last commit recency, latest release date, and issue-to-star ratio. Uses a 2-year decay window. **Popularity (30%)** — Total and monthly downloads, GitHub stars, and forks. Logarithmic scaling prevents top-heavy scores. **Community (15%)** — Contributors, dependents, forks, watchers, and maintainers. Measures real ecosystem engagement. **Maturity (30%)** — Project age, version count, PHP version support, and release stability. ### Release Activity Cadence Every ~73 days Total 5 Last Release 3063d ago ### Community Maintainers ![](https://www.gravatar.com/avatar/d6b2d4181af2266ff9fd59836fd742c457dad8e0234826f3238a9553c023e30f?d=identicon)[perryflynn](/maintainers/perryflynn) --- Top Contributors [![perryflynn](https://avatars.githubusercontent.com/u/1693988?v=4)](https://github.com/perryflynn "perryflynn (108 commits)") --- Tags deserializationlambdalambda-expressionsphpserializationphpdataexpressionslambda ### Embed Badge ![Health badge](/badges/perryflynn-perrys-lambda/health.svg) ``` [![Health](https://phpackages.com/badges/perryflynn-perrys-lambda/health.svg)](https://phpackages.com/packages/perryflynn-perrys-lambda) ``` ### Alternatives [apache/avro Apache Avro™ is a data serialization system. 3.3k50.6k3](/packages/apache-avro)[nikic/phlexy Lexing experiments in PHP 162589.7k14](/packages/nikic-phlexy)[corveda/php-sandbox A PHP library that can be used to run PHP code in a sandboxed environment 23790.9k2](/packages/corveda-php-sandbox)[friendsofcxml/cxml-php PHP Implementation of cXML Standard 16131.4k7](/packages/friendsofcxml-cxml-php)[bupy7/xml-constructor The array-like constructor of XML document structure. 1338.9k](/packages/bupy7-xml-constructor) PHPackages © 2026 [Directory](/)[Categories](/categories)[Trending](/trending)[Changelog](/changelog)[Analyze](/analyze)