Strings
Strings are used to represent textual information and can be defined within single ' '
or double " "
quotes.
main.php
1234<?php $name = "John"; $message = 'Hello, World!'; ?>
Strings can contain any characters, including letters, digits, and special symbols.
String Concatenation
Concatenation in PHP is used to join strings together into one string. The concatenation operator .
(dot) is used for this purpose:
main.php
1234567<?php $firstName = "John"; $lastName = "Doe"; $fullName = $firstName . " " . $lastName; // `$fullName` will be `"John Doe"` echo $fullName; ?>
The code above defines two variables, $firstName
and $lastName
, with values "John"
and "Doe"
respectively. It concatenates them into $fullName
using the dot operator and then outputs the full name "John Doe"
using echo
.
Using Single and Double Quotes
You can use both '
(single) and "
(double quotes) to define strings. They have some differences in how they handle variables and special characters.
Double quotes allow variables to be directly used within the string and support escaping special characters:
main.php
123456<?php $name = "John"; $message = "Hello, $name!"; echo $message; ?>
Single quotes treat everything inside them as literal text, ignoring variables and special characters:
main.php
123456<?php $name = "John"; $message = 'Hello, $name!'; echo $message; ?>
Swipe to start coding
-
Assign any name to the variable
$name
. -
Concatenate the strings using the
.
operator so that running the code outputs the greeting"Hello,
SomeName!"
.
Lösning
Tack för dina kommentarer!
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Strings
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Strings are used to represent textual information and can be defined within single ' '
or double " "
quotes.
main.php
1234<?php $name = "John"; $message = 'Hello, World!'; ?>
Strings can contain any characters, including letters, digits, and special symbols.
String Concatenation
Concatenation in PHP is used to join strings together into one string. The concatenation operator .
(dot) is used for this purpose:
main.php
1234567<?php $firstName = "John"; $lastName = "Doe"; $fullName = $firstName . " " . $lastName; // `$fullName` will be `"John Doe"` echo $fullName; ?>
The code above defines two variables, $firstName
and $lastName
, with values "John"
and "Doe"
respectively. It concatenates them into $fullName
using the dot operator and then outputs the full name "John Doe"
using echo
.
Using Single and Double Quotes
You can use both '
(single) and "
(double quotes) to define strings. They have some differences in how they handle variables and special characters.
Double quotes allow variables to be directly used within the string and support escaping special characters:
main.php
123456<?php $name = "John"; $message = "Hello, $name!"; echo $message; ?>
Single quotes treat everything inside them as literal text, ignoring variables and special characters:
main.php
123456<?php $name = "John"; $message = 'Hello, $name!'; echo $message; ?>
Swipe to start coding
-
Assign any name to the variable
$name
. -
Concatenate the strings using the
.
operator so that running the code outputs the greeting"Hello,
SomeName!"
.
Lösning
Tack för dina kommentarer!
Awesome!
Completion rate improved to 4.35single