What is a lambda function in PHP?

Posted by Prem Tiwari | Updated on August 29, 2020

A lambda function is an anonymous PHP function that can be stored in a variable and passed as an argument to other functions or methods. A closure is a lambda function that is aware of its surrounding context. For example –

<?php

$input = array(1, 2, 3, 4, 5);

$output = array_filter($input, function ($v) {

return $v > 2;

});

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What is a lambda function in PHP?

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