## How to Execute Anonymous Functions Instantly in PHP?

Executing Anonymous Functions Instantly in PHP

In JavaScript, defining and executing anonymous functions immediately is straightforward using the syntax:

<code class="js">(function () { /* do something */ })()</code>

Is there a similar mechanism in PHP?

PHP 7

With PHP versions 7 and later, anonymous functions can be executed instantly and conveniently:

<code class="php">(function() { echo 'executed'; })();</code>

Pre-PHP 7

Prior to PHP 7, the only way to achieve immediate execution was through the call_user_func() function:

<code class="php">call_user_func(function() { echo 'executed'; });</code>

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