Replace string or explode() function

Question

I have a link in format like

http://example.com/a/b.swf

I want to to convert it to

http://cache.example.com/a/b.swf

How can I do it?

I tried it with PHP's explode() function, but when I explode some part of string, then I add it to itself it does not work.

Don't `explode()` urls, rather use function [parse_url()](http://php.net/manual/en/function.parse-url.php). — Glavić, Sep 29 '13 at 21:50

score 3 · Answer 1 · answered Sep 29 '13 at 21:24

3

$new_string = str_replace('http://example.com/', 'http://cache.example.com/', $orig_string);

?

answered Sep 29 '13 at 21:24

Lajos Veres

but values comes from a variable dynamically? – hakki Sep 29 '13 at 21:25
$new_string = str_replace(array_keys($map), array_values($map), $orig_string); if $map=array('http://example.com/'=>'http://cache.example.com/',...); – Lajos Veres Sep 29 '13 at 21:26
When you replace the complete string with http... then its equal if there paramters. – René Höhle Sep 29 '13 at 21:26

score 3 · Accepted Answer · answered Sep 29 '13 at 21:25

3

$str = 'http://example.com/a/b.swf';
$str = str_replace('http://', 'http://cache.', $str);

answered Sep 29 '13 at 21:25

zkanoca

score 2 · Answer 3 · answered Sep 29 '13 at 21:25

2

If you want to be more "professional", then use a special function http://php.net/manual/en/function.parse-url.php to parse URL.

answered Sep 29 '13 at 21:25

Alex

score 0 · Answer 4 · answered Sep 29 '13 at 21:34

0

Try str_replace: str_replace ($search , $replace , $subject [, int &$count ])

$str = 'http://example.com/a/b.swf';
$substr = 'http://';
$attachment = 'cache.';

$newstring = str_replace($substr, $substr.$attachment, $str);

answered Sep 29 '13 at 21:34

Sage

4 Answers4