Want to win a PS4? Go Premium and enter to win our High-Tech Treats giveaway. Enter to Win

x
?
Solved

Can anyone explain the difference in a real life situation between strpos() and strstr()?

Posted on 2011-09-17
5
Medium Priority
?
345 Views
Last Modified: 2012-05-12
Can anyone explain the difference in a real life situation between strpos() and strstr()?
0
Comment
Question by:Octalys
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 4
5 Comments
 
LVL 12

Expert Comment

by:jet-black
ID: 36553381
0
 
LVL 12

Accepted Solution

by:
jet-black earned 2000 total points
ID: 36553395
You can also see by example:

$text = 'string';

The result of
echo strpos($text, 'ri');
is
2

Open in new window


On the other hand, the result of
echo strstr($text, 'ri');
is
ring

Open in new window



strpos will give you position of the the text part you search.
strstr will give you the substring of the text started by the position of the the text part you search (which is equal to strpos() func.'s value) to the final character.
0
 
LVL 12

Expert Comment

by:jet-black
ID: 36553413
So, if you only check if the text part exists in the string, just use strpos() function. It is faster.

There will be times when you will need the strstr() function too.
Here's the example code from the manual:

<?php
$email  = 'name@example.com';
$domain = strstr($email, '@');
echo $domain; // prints @example.com

$user = strstr($email, '@', true); // As of PHP 5.3.0
echo $user; // prints name
?>

Open in new window

0
 

Author Closing Comment

by:Octalys
ID: 36553706
thanks for the answer.
I was looking at the php documentation of both functions, but somehow I couldnt find the difference. Now I see it.

Make sense.

Thanks.
0
 
LVL 12

Expert Comment

by:jet-black
ID: 36553713
You're welcome.
0

Featured Post

Enroll in October's Free Course of the Month

Do you work with and analyze data? Enroll in October's Course of the Month for 7+ hours of SQL training, allowing you to quickly and efficiently store or retrieve data. It's free for Premium Members, Team Accounts, and Qualified Experts!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Foreword (July, 2015) Since I first wrote this article, years ago, a great many more people have begun using the internet.  They are coming online from every part of the globe, learning, reading, shopping and spending money at an ever-increasing ra…
Nothing in an HTTP request can be trusted, including HTTP headers and form data.  A form token is a tool that can be used to guard against request forgeries (CSRF).  This article shows an improved approach to form tokens, making it more difficult to…
The viewer will learn how to dynamically set the form action using jQuery.
The viewer will learn how to create a basic form using some HTML5 and PHP for later processing. Set up your basic HTML file. Open your form tag and set the method and action attributes.: (CODE) Set up your first few inputs one for the name and …
Suggested Courses

618 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question