Adding two or more strings in PHP

$string1="Welcome to plus2net.com";
$string2=" PHP  section ";
$string=$string1.$string2;
echo $string;

The out put of the above command will give the full sentence

Welcome to plus2net.com PHP section

We can add any number of strings by using " . " ( dot ) in between them.

Now let us learn how we can add different strings to a common string variable. Here is the code.

$string= " Hello, ";
$string .=" Welcome to ";
$string .=" plus2net.com ";
echo $string;

The above code will print all the strings one after other forming the complete sentence.

We can merge one string inside another string like this.

$string2=" PHP  section ";
$string= "Welcome to plus2net.com $string2";
echo $string;

Here the code will display full string with string2 value added at the end. But this way we can't add function inside a string. Let us try to add one function to display present date inside the welcome message. Here like a string we can't add. The following line won't display today's date along with the string. This is not going to work .

$string= "Welcome to plus2net.com $string2 today on date('m/d/y')";

We have to modify the above line like this to display current date.

$string= "Welcome to plus2net.com $string2 today on  ". date("m/d/y");
echo $string;

Output is here

Welcome to plus2net.com  PHP  section  today on  09/09/26

Example: Concatenating Multiple Strings Dynamically

$str1 = "Hello";
$str2 = "World!";
echo $str1 . " " . $str2;  // Output: Hello World!

Example: Concatenating Numeric Strings

$num1 = "100";
$num2 = "50";
echo $num1 . $num2;  // Output: 10050

String Functions first letter of every word to capitalize by using ucwords Change all alphabetic chars to lowercase Checking all lower case or upper case chars in a string

Subhendu Mohapatra

Author & Instructor at plus2net

I write and maintain practical tutorials on Python, PHP, SQL, JavaScript, HTML, jQuery, and web development at plus2net. The tutorials focus on clear explanations, working examples, and code that readers can test and adapt while learning.

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rajesh	28-06-2010
Good useful article.

String adding in PHP

Example: Concatenating Multiple Strings Dynamically

Example: Concatenating Numeric Strings

Subhendu Mohapatra