Questions tagged [strrchr]
25 questions
7
votes
3 answers
Understanding strrchr function
I'm doing some tests with function strrchr, but I can't understand the output:
$text = 'This is my code';
echo strrchr($text, 'my');
//my code
Ok, the function returned the string before last occurrence
$text = 'This is a test to test code';
echo…
viniciuswebdev
- 1,286
- 1
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- 20
7
votes
5 answers
Why strrchr() returns `char*` instead of `const char*`?
The function char* strrchr(const char *str, int ch) returns a pointer (char*) within str (const char *) where the last occurrence of ch is located.
So we can write the following code without any cast:
#include
int main()
{
const char…
oHo
- 51,447
- 27
- 165
- 200
5
votes
3 answers
Most efficient way of finding last char occurrence
Consider this function I wrote real quick to find the last occurrence of a given char in a string and return it's position within the array of chars that physically is the string:
size_t strlstchar(const char *str, const char ch)
{
char *chptr =…
Keith Miller
- 1,337
- 1
- 16
- 32
3
votes
2 answers
Cut string by substrings after none left
I have a string Field-Text-Datepicker. I need to "explode" it to following array:
array(
[0] => field-text-datepicker
[1] => field-text
[2] => field
);
I've tried some combinations of strrchr(), recursion and for loops, but everything…
Petr Cibulka
- 2,452
- 4
- 28
- 45
3
votes
2 answers
STRCHR vs STRRCHR difference?
I would like to know the difference between the two different uses.
I believe the difference in some what very subtle.
This is an explanation taken from the IBM reference manual.
However maybe my english is bad, I just can't visualize the…
hayonj
- 1,429
- 3
- 21
- 28
2
votes
2 answers
How to extract the leftover substring from strrchr() or strchr()?
Let's say I have the following string which looks like a file path:
char *filepath = "this/is/my/path/to/file.jpg";
I can use strrchr() to extract file.jpg as follows:
char *filename = strrchr(filepath, '/') + 1;
Now I need to extract and store…
blackbeard
- 385
- 2
- 12
2
votes
3 answers
strrchr with strtr or str_replace in PHP
I have searched a lot of sites and SO answers for replacing characters in strings, but I didn't find a solution.
I need to replace only the last used character 'é' of a string.
It should work for every string, also if the string only contains once…
Grischa
- 70
- 8
- 26
2
votes
4 answers
Strange behavior with function strrchr
I get some strange result with strrchr. please help me.
Here is my code:
#include
#include
#include
int main()
{
char szString[32] = "hello-world-and-everyone";
char* ptemp = NULL;
ptemp = strrchr(szString,…
user3133755
- 21
- 1
1
vote
3 answers
segmentation fault in use of strrchr function
Here is my program which reverses a string. I am trying to use function strrchr at the end because I am entering the string James Bond on standard input. So I want to see if strrchr function gives a pointer to value character B of the above…
Registered User
- 5,173
- 16
- 47
- 73
1
vote
1 answer
Unable to execute a code that finds first character of a string that matches with a given character
This code is written to identify the position of character in the string from back which matches first with a given character.When i use scanf to get string,the compiler doesn't ask for the character and directly gives the output as 0.I am unable to…
ADITYA SHRIVASTAVA
- 27
- 3
1
vote
1 answer
PHP return character after value in string
I have a dynamic string that looks like this...
/tester?bc=7&tester=orange
Using PHP I am trying to return the single value after bc=
I have looked at strrchr but that doesn't seem to let me specify just returning one character, how should I be…
fightstarr20
- 11,682
- 40
- 154
- 278
1
vote
1 answer
Why does GCC accept convertion from 'const char *' to 'char *' on std::strrchr() returned value?
While adding a detailed answer, I noticed that GCC does not warn the following code while Visual C++ complains.
#include
int main()
{
const char CONSTSTR[] = "foo/bar/foobar.txt";
char *nonconst = std::strrchr (CONSTSTR, '/');
…
oHo
- 51,447
- 27
- 165
- 200
0
votes
0 answers
Is there a caseinsensitive version of strrchr and wcsrchr?(c++)
I try to check if variable ends with expression.
My current code is this:
(strchr(variable.data(), tolower(expression[0])) || strchr(variable.data(), toupper(expression[0]))) && _stricmp((strrchr(variable.data(), tolower(expression[0]))?…
ojesseus1
- 43
- 5
0
votes
0 answers
why do i get Segmentation fault (core dumped) error here?
while trying to regenerate the function strrchr i get this error, can someone help me understand this part?
#include
char *ft_strrchr(const char *s, int c)
{
int i;
char *ptr;
ptr = NULL;
i = 0;
while (*s)
{
if (*(s +…
0
votes
3 answers
PHP strrchr parse int
I've got a problem. This is my PHP code :
$extract = $query;
$extractpoint = strrchr($extract, ".");
So, $extract is a parse_url of my website address.
Exemple : http://test.com?param.6
$extract = param.6 and $extractpoint = .6
BUT, I want a…
Alessio Cammarata
- 13
- 8