String in php program

Searching For Characters and Substring in a String in Java
Program to reverse a string (Iterative and Recursive)
Left Rotation and Right Rotation of a String
Sort string of characters
Print the frequency of each character in Alphabetical order
Swap characters in a String
C program to find the length of a string
How to insert characters in a string at a certain position?
Program to check if two strings are same or not
Concatenating Two Strings in C
Remove all occurrences of a character in a string

Program to print all substrings of a given string
Print all subsequences of a string
Count Distinct Subsequences
Count distinct occurrences as a subsequence
Longest Common Subsequence (LCS)
Shortest Superstring Problem
Printing Shortest Common Supersequence
Shortest Common Supersequence
Longest Repeating Subsequence
Longest Palindromic Subsequence (LPS)
Longest Palindromic Substring

K’th Non-repeating Character
Queries for characters in a repeated string
URLify a given string (Replace spaces with %20)
Count of total anagram substrings
Count number of binary strings without consecutive 1’s
Lexicographically next string
Check if given string can be split into four distinct strings
Word Break Problem | (Trie solution)
Check for balanced parentheses in an expression | O(1) space
Length of Longest Balanced Subsequence
Minimum Swaps for Bracket Balancing
Convert a sentence into its equivalent mobile numeric keypad sequence
Burrows – Wheeler Data Transform Algorithm
Form minimum number from given sequence
Print shortest path to print a string on screen
Mirror characters of a string

Multiply Large Numbers represented as Strings
Count ways to increase LCS length of two strings by one
Minimum rotations required to get the same string
Find if an array of strings can be chained to form a circle | Set 2
Given a sorted dictionary of an alien language, find order of characters
Remove minimum number of characters so that two strings become anagram
Minimum Number of Manipulations required to make two Strings Anagram Without Deletion of Character
Palindrome Substring Queries
Minimum Word Break
Minimum number of bracket reversals needed to make an expression balanced
Word Wrap problem ( Space optimized solution )
Decode a string recursively encoded as count followed by substring

Searching For Characters and Substring in a String in Java
Program to reverse a string (Iterative and Recursive)
Left Rotation and Right Rotation of a String
Sort string of characters
Print the frequency of each character in Alphabetical order
Swap characters in a String
C program to find the length of a string
How to insert characters in a string at a certain position?
Program to check if two strings are same or not
Concatenating Two Strings in C
Remove all occurrences of a character in a string

Program to print all substrings of a given string
Print all subsequences of a string
Count Distinct Subsequences
Count distinct occurrences as a subsequence
Longest Common Subsequence (LCS)
Shortest Superstring Problem
Printing Shortest Common Supersequence
Shortest Common Supersequence
Longest Repeating Subsequence
Longest Palindromic Subsequence (LPS)
Longest Palindromic Substring

K’th Non-repeating Character
Queries for characters in a repeated string
URLify a given string (Replace spaces with %20)
Count of total anagram substrings
Count number of binary strings without consecutive 1’s
Lexicographically next string
Check if given string can be split into four distinct strings
Word Break Problem | (Trie solution)
Check for balanced parentheses in an expression | O(1) space
Length of Longest Balanced Subsequence
Minimum Swaps for Bracket Balancing
Convert a sentence into its equivalent mobile numeric keypad sequence
Burrows – Wheeler Data Transform Algorithm
Form minimum number from given sequence
Print shortest path to print a string on screen
Mirror characters of a string

Multiply Large Numbers represented as Strings
Count ways to increase LCS length of two strings by one
Minimum rotations required to get the same string
Find if an array of strings can be chained to form a circle | Set 2
Given a sorted dictionary of an alien language, find order of characters
Remove minimum number of characters so that two strings become anagram
Minimum Number of Manipulations required to make two Strings Anagram Without Deletion of Character
Palindrome Substring Queries
Minimum Word Break
Minimum number of bracket reversals needed to make an expression balanced
Word Wrap problem ( Space optimized solution )
Decode a string recursively encoded as count followed by substring

Источник

PHP Strings

A string is a sequence of characters, like «Hello world!».

PHP String Functions

In this chapter we will look at some commonly used functions to manipulate strings.

strlen() — Return the Length of a String

The PHP strlen() function returns the length of a string.

Example

Return the length of the string «Hello world!»:

str_word_count() — Count Words in a String

The PHP str_word_count() function counts the number of words in a string.

Example

Count the number of word in the string «Hello world!»:

strrev() — Reverse a String

The PHP strrev() function reverses a string.

Example

Reverse the string «Hello world!»:

strpos() — Search For a Text Within a String

The PHP strpos() function searches for a specific text within a string. If a match is found, the function returns the character position of the first match. If no match is found, it will return FALSE.

Example

Search for the text «world» in the string «Hello world!»:

Tip: The first character position in a string is 0 (not 1).

str_replace() — Replace Text Within a String

The PHP str_replace() function replaces some characters with some other characters in a string.

Example

Replace the text «world» with «Dolly»:

Complete PHP String Reference

For a complete reference of all string functions, go to our complete PHP String Reference.

The PHP string reference contains description and example of use, for each function!

PHP Exercises

COLOR PICKER

Report Error

If you want to report an error, or if you want to make a suggestion, do not hesitate to send us an e-mail:

Thank You For Helping Us!

Your message has been sent to W3Schools.

Top References

Top Examples

Get Certified

W3Schools is optimized for learning and training. Examples might be simplified to improve reading and learning. Tutorials, references, and examples are constantly reviewed to avoid errors, but we cannot warrant full correctness of all content. While using W3Schools, you agree to have read and accepted our terms of use, cookie and privacy policy.

Источник

String in php program