❮ PHP String Reference Show
ExampleFind the position of the first occurrence of "php" inside the string: echo strpos("I love php, I love php too!","php"); Definition and UsageThe strpos() function finds the position of the first occurrence of a string inside another string. Note: The strpos() function is case-sensitive. Note: This function is binary-safe. Related functions:
Syntaxstrpos(string,find,start) Parameter ValuesParameterDescriptionstringRequired. Specifies the string to searchfindRequired. Specifies the string to findstartOptional. Specifies where to begin the search. If start is a negative number, it counts from the end of the string.Technical DetailsReturn Value:Returns the position of the first occurrence of a string inside another string, or FALSE if the string is not found. Note: String positions start at 0, and not 1.PHP Version:4+Changelog:PHP 7.1.0 - The start parameter can be a negative number❮ PHP String Reference where Example 1: Find index of First Occurrence of SubstringIn the following example, we will take a string and try to find the first occurrence of substring 0.Python Program RunOutput
Example 2: Find index of First Occurrence of Substring after a specific positionIn the following example, we will take a string and try to find the first occurrence of substring 0 after position 2 in the string.Python Program RunOutput
Now it has found index of the substring that occurred for the first time after SummaryIn this tutorial of Python Examples, we learned how to find the index of substring in a string using str.find() function. In this section you can learn and practice C Programming Questions based on "Strings" and improve your skills in order to face the interview, competitive examination and various entrance test (CAT, GATE, GRE, MAT, Bank Exam, Railway Exam etc.) with full confidence. Where can I get C Programming Strings questions and answers with explanation?IndiaBIX provides you lots of fully solved C Programming (Strings) questions and answers with Explanation. Solved examples with detailed answer description, explanation are given and it would be easy to understand. All students, freshers can download C Programming Strings quiz questions with answers as PDF files and eBooks. Where can I get C Programming Strings Interview Questions and Answers (objective type, multiple choice)?Here you can find objective type C Programming Strings questions and answers for interview and entrance examination. Multiple choice and true or false type questions are also provided. How to solve C Programming Strings problems?You can easily solve all kind of C Programming questions based on Strings by practicing the objective type exercises given below, also get shortcut methods to solve C Programming Strings problems. std::find from C++ STL, the index method in Python, the indexOf method in Java, the indexOf method in JavaScript are some inbuilt functions in the libraries of respective languages for finding the starting index of a substring in a given string.To find the index of first occurrence of a substring in a string you can use String.indexOf() function. A string, say In this tutorial, we shall learn to get the index of first occurrence of a string in another string using Java. We shall make use of str2 first appeared in str1 at index : 123 indicating that the string str2 is not present in the string str1 .Example – Get the index of first occurrence of a substringIn this example, we shall initialize two strings with variable names /** * Java Example program to find the index of first occurrence of a substring in a string */ public class FirstOccurrenceExample { public static void main(String[] args) { //initialize strings String str1 = "hello world good morning. good day."; String str2 = "good"; //get the index of str2 in str1 int indexOfSubStr = str1.indexOf(str2); System.out.println("str2 first appeared in str1 at index : "+ indexOfSubStr); } } When the above program is run, the output to the console is as shown below : str2 first appeared in str1 at index : 12 Example – Get the index of first occurrence of a substring – Ignore CaseIn this example, we ignore the case of both the strings and try to find the occurrence of string Please note that with the strings str1 and str2 in the below program, if you consider the case, indexOf() would return str2 first appeared in str1 at index : 123. But as we are ignoring the case, we got /** * Java Example program to find the index of first occurrence of a substring in a string */ public class FirstOccurrenceExample { public static void main(String[] args) { //initialize strings String str1 = "hello world GoOd morning. gOOD day."; String str2 = "GOOD"; //ignore case and get the index of str2 in str1 int indexOfSubStr = str1.toLowerCase().indexOf(str2.toLowerCase()); System.out.println("str2 first appeared in str1 at index : "+ indexOfSubStr); } }3 and /** * Java Example program to find the index of first occurrence of a substring in a string */ public class FirstOccurrenceExample { public static void main(String[] args) { //initialize strings String str1 = "hello world GoOd morning. gOOD day."; String str2 = "GOOD"; //ignore case and get the index of str2 in str1 int indexOfSubStr = str1.toLowerCase().indexOf(str2.toLowerCase()); System.out.println("str2 first appeared in str1 at index : "+ indexOfSubStr); } }4 in str1 matched./** * Java Example program to find the index of first occurrence of a substring in a string */ public class FirstOccurrenceExample { public static void main(String[] args) { //initialize strings String str1 = "hello world GoOd morning. gOOD day."; String str2 = "GOOD"; //ignore case and get the index of str2 in str1 int indexOfSubStr = str1.toLowerCase().indexOf(str2.toLowerCase()); System.out.println("str2 first appeared in str1 at index : "+ indexOfSubStr); } } Run the program. str2 first appeared in str1 at index : 12 ConclusionIn this Java Tutorial, we have learned how to get index of first occurrence of a substring in a String, by considering or ignoring the case of alphabets. Which function is used to find the first occurrence of the given string in another string?The strchr() function finds the first occurrence of a character in a string. The character c can be the null character (\0); the ending null character of string is included in the search. The strchr() function operates on null-ended strings.
Which method is used to find the occurrence a string within another string?If the substring is present in the string, find() returns the index, or the character position, of the first occurrence of the specified substring from that given string. If the substring you are searching for is not present in the string, then find() will return -1 .
How to find first occurrence of a string in a string Python?Python String find() method returns the lowest index or first occurrence of the substring if it is found in a given string. If it is not found, then it returns -1.
|