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Questions tagged [strstr]

A function that searches a string in another string.

A function that searches a string in another string.

Examples

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

(Example taken from php.net)

Resources

363 questions
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strcmp implementation not working with special characters

I'm trying to implement my own strcmp function, my strcmp bahaves differently when I use special characters. #include int my_strcmp(const char *s1, const char *s2) { const char *str1; const char *str2; str1 = s1; …
Junius L
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strstr() function

I am trying to write a program that compares a substring that the user enters with an array of strings. #include #include char animals[][20] = { "dogs are cool", "frogs are freaky", "monkeys are crazy" }; int…
tenkii
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How to check if a word exists in a sentence

For example, if my sentence is $sent = 'how are you'; and if I search for $key = 'ho' using strstr($sent, $key) it will return true because my sentence has ho in it. What I'm looking for is a way to return true if I only search for how, are or you.…
Tafu
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strstr not functioning

Why does this particular piece of code return false on the strstr() if I input "test"? char input[100]; int main() { fgets(input, 100, stdin); printf("%s", input); if(strstr("test message", input)) { printf("strstr…
KWJ2104
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Efficient way to split a vector of a full name in to 2 separate vectors

I have a vector consisting of full names with the first and last name separated by a comma this is what the first few elements look like: > head(val.vec) [1] "Aabye,ֲ Edgar" "Aaltonen,ֲ Arvo" "Aaltonen,ֲ Paavo" [4] "Aalvik Grimsb,ֲ…
Lee
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Does strstr()'s implementation in gcc and VS have linear complexity?

I know that there are fast string search algorithms, like Boyer–Moore and Knuth–Morris–Pratt, that have O(n+m) complexity, while the trivial solution would be O(n*m). So does the implementation of strstr() for the most popular toolchains - gcc and…
sashoalm
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Opposite PHP function of strstr to return first part of string, not last

I have an string, something like this: $abcdef(+$1.00) I'm trying to get the first part of the string before the first parenthesis: $abcdef Currently if I use strstr() it will return the part of the string after the specified character: $newstr…
bobbiloo
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Converting a C (\0 terminated) string to a PHP string

PHP is one of those languages I use periodically, but usually have to dust the cobwebs off when I start using it again. The same applies this week whilst I port some C code to PHP. This uses a lot of AES encryption and SHA256 hashing - all working…
winwaed
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Applying strstr() multiple times on same string in C

I'm trying to write a code that extracts all words/strings between the and tags using strstr. But it seems that it just gets stuck to the first string extracted, which is "quick". How can I get the code to keep going after extracting the first…
Syvil San Pablo
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PHP strstr - The reverse method

I'm looking to get the same exact results as php strstr command (while it set to true) but in reverse order. I know that I can simply reverse the string and use strstr and then reverse it again but I was wonder if there is any internal php command…
Steven
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Weird strstr behaviour

i'm trying to find the position of substring in a string. #include #include void find_str(char const* str, char const* substr) { char* pos = strstr(str, substr); if(pos) { printf("found the string '%s' in '%s'…
Can Vural
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Using strstr in C

This program is not giving any output... the function find_track should return the track if a matching string is entered to it. #include #include char tracks[][80] = { "I left my heart in Harward Med School", "Newark,…
user2035503
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4 answers

How to find the first occurrence of one of several characters (other than using regex)

After going through a bunch of threads, I know that I need to use regex.h for using regular expressions in C & C++. But I was wondering, is there an easier way to search for occurrence of "/" or "\" in a string. // I have a strstr statement like…
sskanitk
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strstr: behavior different using different versions of gcc

I'm porting a program that works with Ubuntu 8.04 (gcc version 4.2.4) to 10.04 (gcc version 4.4.3). I have the following code: #include #include int main(void) { char p[100] = "////abcd"; char *t; /* Remove duplicate…
Johan
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wrong parameter count for strstr()

I have built a nav menu in wordpres using a posts GUID, and post title, I am taking only part of the title and to do this I am doing the following, $casestudylist .= "
  • ". strstr($v->post_title, ":",…
    • Udders
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