PHP RegEx - Remove from char to char?

Question

I have this string:

http://scontent-b.xx.fbcdn.net/hphotos-prn2/t1/c22.0.100.100/p100x100/1489204_568091786618712_2075358603_n.jpg

I want to remove following part of the string:

c22.0.100.100/p100x100/

... But following part of the string is dynamic (changes):

c22.0.100.100

I'm thinking that it might be possible to use the PHP preg_ function in combination with a regular expression i some way? Example: Remove backwards from /p100x100/ to next / ??

Does anyone have a solution for this problem?

you know the string you want to remove is alway starts at the 5th / and ends at the 7th. should take you less than 10 seconds to come up with a solution from there without even bothering up with a regex — Dave
– Dave, Commented Jan 21, 2014 at 15:05
You must give more examples of how c22.0.100.100 can change — Casimir et Hippolyte
– Casimir et Hippolyte, Commented Jan 21, 2014 at 15:06
I have a solution. But this is basic, try out some regexes (if you need them, explode() should suffice) and come back with code you've written — kero
– kero, Commented Jan 21, 2014 at 15:06
Thank you for quick replies guys. Can you come up with solutions? Im not very familiar with regex's. Casimir another example could be: c170.0.100.100 and c19.0.100.100 — Anton Brix
– Anton Brix, Commented Jan 21, 2014 at 15:14

Gavin Jackson · Accepted Answer · 2014-01-21 15:23:01Z

1

CODE:

  $a = 'http://scontent-b.xx.fbcdn.net/hphotos-prn2/t1/c22.0.100.100/p100x100/1489204_568091786618712_2075358603_n.jpg';;
  $b = preg_replace("/[^\/]*\/p100x100\//",'',$a);
  echo 'A: '.$a."\n";
  echo 'B: '.$b."\n";

This regex [^\/]*\/p100x100\/ replaces...

[^\/]* as many non-'/'
\/p100x100\/ followed by /p100x100/
'' with nothing

OUTPUT:

A: http://scontent-b.xx.fbcdn.net/hphotos-prn2/t1/c22.0.100.100/p100x100/1489204_568091786618712_2075358603_n.jpg
B: http://scontent-b.xx.fbcdn.net/hphotos-prn2/t1/1489204_568091786618712_2075358603_n.jpg

answered Jan 21, 2014 at 15:23

Gavin Jackson

2,0952 gold badges25 silver badges30 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Ben Green · Accepted Answer · 2014-01-21 15:12:24Z

0

preg_replace('¦/t1/.*/p100x100/¦', '/t1/', $string)

could throw some funny problems though using .* but without any other information on what the replaceable string could be it's the best that can be done.

what's your final aim of this? what does it do, what does it need to do, and why, these are all pieces of the puzzle that will help people answer :)

answered Jan 21, 2014 at 15:12

Ben Green

4381 gold badge8 silver badges18 bronze badges

2 Comments

Anton Brix Over a year ago

Thank you Ben. I'll be back tomorrow.. "/t1/" isnt always part of the string :-(

Phil Perry Over a year ago

preg_replace('~[^/]+/p100x100/~', '', $string); I haven't tried it out, but it might work to remove those two directories. It might require some tweaking.

Nambi · Accepted Answer · 2014-01-21 17:06:54Z

0

Do like this to remove the c22.0.100.100/p100x100/

<?php
$str="http://scontent-b.xx.fbcdn.net/hphotos-prn2/t1/c22.0.100.100/p100x100/1489204_568091786618712_2075358603_n.jpg";

    echo preg_replace('~(?<=t1).*(?=\/)~',"",$str);

Demo

answered Jan 21, 2014 at 17:06

Nambi

12k4 gold badges40 silver badges50 bronze badges

Comments

Toto · Accepted Answer · 2014-01-22 09:35:00Z

0

How about:

preg_replace('~/c\d+(?:\.\d+){3}/p100x100\b~', '', $str)

answered Jan 22, 2014 at 9:35

Toto

91.7k63 gold badges97 silver badges135 bronze badges

Collectives™ on Stack Overflow

PHP RegEx - Remove from char to char?

4 Answers 4

Comments

2 Comments

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

4 Answers 4

Comments

2 Comments

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related