Menu
×
   ❮     
HTML CSS JAVASCRIPT SQL PYTHON JAVA PHP HOW TO W3.CSS C C++ C# BOOTSTRAP REACT MYSQL JQUERY EXCEL XML DJANGO NUMPY PANDAS NODEJS R TYPESCRIPT ANGULAR GIT POSTGRESQL MONGODB ASP AI GO KOTLIN SASS VUE DSA GEN AI SCIPY AWS CYBERSECURITY DATA SCIENCE
     ❯   

PHP Tutorial

PHP HOME PHP Intro PHP Install PHP Syntax PHP Comments PHP Variables PHP Echo / Print PHP Data Types PHP Strings PHP Numbers PHP Casting PHP Math PHP Constants PHP Magic Constants PHP Operators PHP If...Else...Elseif PHP Switch PHP Loops PHP Functions PHP Arrays PHP Superglobals PHP RegEx

PHP Forms

PHP Form Handling PHP Form Validation PHP Form Required PHP Form URL/E-mail PHP Form Complete

PHP Advanced

PHP Date and Time PHP Include PHP File Handling PHP File Open/Read PHP File Create/Write PHP File Upload PHP Cookies PHP Sessions PHP Filters PHP Filters Advanced PHP Callback Functions PHP JSON PHP Exceptions

PHP OOP

PHP What is OOP PHP Classes/Objects PHP Constructor PHP Destructor PHP Access Modifiers PHP Inheritance PHP Constants PHP Abstract Classes PHP Interfaces PHP Traits PHP Static Methods PHP Static Properties PHP Namespaces PHP Iterables

MySQL Database

MySQL Database MySQL Connect MySQL Create DB MySQL Create Table MySQL Insert Data MySQL Get Last ID MySQL Insert Multiple MySQL Prepared MySQL Select Data MySQL Where MySQL Order By MySQL Delete Data MySQL Update Data MySQL Limit Data

PHP XML

PHP XML Parsers PHP SimpleXML Parser PHP SimpleXML - Get PHP XML Expat PHP XML DOM

PHP - AJAX

AJAX Intro AJAX PHP AJAX Database AJAX XML AJAX Live Search AJAX Poll

PHP Examples

PHP Examples PHP Compiler PHP Quiz PHP Exercises PHP Server PHP Certificate

PHP Reference

PHP Overview PHP Array PHP Calendar PHP Date PHP Directory PHP Error PHP Exception PHP Filesystem PHP Filter PHP FTP PHP JSON PHP Keywords PHP Libxml PHP Mail PHP Math PHP Misc PHP MySQLi PHP Network PHP Output Control PHP RegEx PHP SimpleXML PHP Stream PHP String PHP Variable Handling PHP XML Parser PHP Zip PHP Timezones

PHP Strings


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


Strings

Strings in PHP are surrounded by either double quotation marks, or single quotation marks.

Example

echo "Hello";
echo 'Hello';
Try it Yourself »

Note There is a big difference between double quotes and single quotes in PHP.

Double quotes process special characters, single quotes does not.


Double or Single Quotes?

You can use double or single quotes, but you should be aware of the differences between the two.

Double quoted strings perform action on special characters.

E.g. when there is a variable in the string, it returns the value of the variable:

Example

Double quoted string literals perform operations for special characters:

$x = "John";
echo "Hello $x";
Try it Yourself »

Single quoted strings does not perform such actions, it returns the string like it was written, with the variable name:

Example

Single quoted string literals returns the string as it is:

$x = "John";
echo 'Hello $x';
Try it Yourself »


String Length

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

Example

Return the length of the string "Hello world!":

echo strlen("Hello world!");
Try it Yourself »

Word Count

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!":

echo str_word_count("Hello world!");
Try it Yourself »

Search For 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!":

echo strpos("Hello world!", "world");
Try it Yourself »

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


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

Test Yourself With Exercises

Exercise:

Get the length of the string "Hello World!".

echo ("Hello World!");

Start the Exercise