What is the difference between dot and comma in php

The dot in PHP is used for object and array access, and commas are used to separate variable lists, array values, and function parameters.

The difference between dot (.) and comma (,) in PHP

In PHP, dot (.) and comma (,) are two different operators with different purposes.

Dot (.)

• Object access operator: Used to access properties or methods in an object. For example:

<code class="php">$user = new User();
$name = $user->name;</code>

• Array key access operator: is used to access values ​​in an array. For example:

<code class="php">$array = ['name' => 'John', 'age' => 30];
$name = $array['name'];</code>

Comma (,)

• Variable list separator: is used to separate variable lists, such as functions parameters or array elements. For example:

<code class="php">function sum(int $a, int $b) {
    return $a + $b;
}</code>

• Array value separator: is used to separate values ​​in an array. For example:

<code class="php">$array = [1, 2, 3];</code>

• Function call delimiter: is used to separate parameters of function calls. For example:

<code class="php">echo print_r($array, true);</code>

Summary

The period (.) in PHP is mainly used for object and array access, while the comma (,) is mainly used for separation Variable lists, array values, and function parameters.

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