CODEWITHSUNDEEP
php
Zerium
Zerium

Reputation: 17333

Why does PHP not differentiate between two exactly same strings?

I have two strings, which, when both outputted with echo, produce the same result: 

x+3=7\\\\x+3-3=7-3\\\\\\thereforex=4

Yes, it's a bit of LaTeX.

But when I use:

$foo1 == $foo2

PHP takes it as false. Why? Do I need to do something? Did I not introduce the problem yet?

Upvotes: 1

Views: 78

Answers (2)

Álvaro González
Álvaro González

Reputation: 146440

You can't be fully sure that both strings are identical with plain echo's, especially if inspecting output through the rendered view of a web browser. Tools you have:

Upvotes: 2

Baba
Baba

Reputation: 95101

You are mostly likely dealing with whitespace or Special Characters

See

$foo1 = 'x+3=7\\\\x+3-3=7-3\\\\\\thereforex=4';
$foo2 = 'x+3=7\\\\x+3-3=7-3\\\\\\thereforex=4';
var_dump($foo1 == $foo2); // returns true

Use var_dump you would see the real difference between them

Upvotes: 1

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