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PHP Build a Basic PHP Website (2018) Listing and Sorting Inventory Items Creating the Display Function

Posted by Javid Abbasov
Javid Abbasov
9,243 Points

Dots between code

Hi. Why do we need to put dots between code?

echo "-" . $movie["title"] . "-";

2 Answers

Jacob Mishkin
Jacob Mishkin
23,118 Points

Its because they concatenating operators. when dealing with string elements.

Javid Abbasov
Javid Abbasov
9,243 Points

i didnt understand(

Jacob Mishkin
Jacob Mishkin
23,118 Points

you didn't understand what I said or using the "." operator?

Javid Abbasov
Javid Abbasov
9,243 Points

I didnt answer what you say

Jacob Mishkin
Jacob Mishkin
23,118 Points

That's cool, lets break it down. I don't know if English is your first language, but these are words in English that if you are programming you should know.

first, concatenation means to join things, or group things together. just like in JavaScript the "+" sign, the "." is for PHP. Remember you can can't use the "+" in PHP like in JavaScript, but they mean the same thing.

here is an example first in JavaScript then in PHP

JavaScript:

var foo = "Hello " + "World" + "!";
//the var foo equals Hello World!

PHP:

<?php

$foo = "Hello " . "World" . "!"; 

// the var foo equals Hello World!

The word operators means what sign of operation you doing. Operators are the signs for addition, subtraction, and other operations like concatenation.

I hope this helps, If you need to dive deeper let me know.

Javid Abbasov
Javid Abbasov
9,243 Points

Thank you very much!! But can we use + instead of . ?

Jacob Mishkin
Jacob Mishkin
23,118 Points

NO, you can ONLY use "." in PHP.

mohammed abdi abdulahi warsame
mohammed abdi abdulahi warsame
4,926 Points
mohammed abdi abdulahi warsame
mohammed abdi abdulahi warsame
4,926 Points

but i thing we can just use -comma , - "Hello, world, !" WHAY do we need to use dots

john larson
john larson
16,594 Points

mohammed, I believe we have to use dot . when putting a variable in a string. as in;

    <?php
$earth = "world";
    echo "Hello ".$earth. " and good morning";

    ?>