PHP substr after a certain char, a substr + strpos elegant solution?
Solution 1
Your first approach is fine: Check whether x
is contained with strpos
and if so get anything after it with substr
.
But you could also use strstr
:
strstr($str, 'x')
But as this returns the substring beginning with x
, use substr
to get the part after x
:
if (($tmp = strstr($str, 'x')) !== false) {
$str = substr($tmp, 1);
}
But this is far more complicated. So use your strpos
approach instead.
Solution 2
Regexes would make it a lot more elegant:
// helo babe
echo preg_replace('~.*?x~', '', $str);
// Tuex helo babe
echo preg_replace('~.*?y~', '', $str);
But you can always try this:
// helo babe
echo str_replace(substr($str, 0, strpos($str, 'x')) . 'x', '', $str);
// Tuex helo babe
echo str_replace(substr($str, 0, strpos($str, 'y')) . 'y', '', $str);
Marco Demaio
Just love coding all day long! Now I'm using PHP and Javascript for my daytime job. I took part in realizing all the back end application to handle the orders, contracts and invoices for a site that sells posta certificata per aziende. Language I love most is C++ Language I hate most is VB6/VB.NET Wishes: to see PHP becoming more OO with operator overloading, and Python add curly braces. I have started coding in BASIC since I was a 13 years old kid with a Commodore 64 and Apple II. During University they taught me C and C++ and JAVA and I realized even more how much I love to code. :) Funny stuff: Micro Roundcube plugin to improve the search box
Updated on July 18, 2022Comments
-
Marco Demaio almost 2 years
let's say I want to return all chars after some needle char
'x'
from:$source_str = "Tuex helo babe"
.Normally I would do this:
if( ($x_pos = strpos($source_str, 'x')) !== FALSE ) $source_str = substr($source_str, $x_pos + 1);
Do you know a better/smarter (more elegant way) to do this?
Without using regexp that would not make it more elegant and probably also slower.
Unfortunately we can not do:
$source_str = substr(source_str, strpos(source_str, 'x') + 1);
Because when
'x'
is not foundstrpos
returnsFALSE
(and not-1
like in JS).FALSE
would evaluate to zero, and 1st char would be always cut off.Thanks,