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  10/15/25

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

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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