How to append a string in PHP ?

We have given two strings and the task is to append a string str1 with another string str2 in PHP. There is no specific function to append a string in PHP. In order to do this task, we have the this operator in PHP:

Using Concatenation assignment operator (“.=”): The Concatenation assignment operator is used to append a string str1 with another string str2.

Syntax:

$x .= $y

Example :

PHP

<?php
// PHP program to append a string


// function to append a string
function append_string ($str1, $str2) {

    // Using Concatenation assignment
    // operator (.=)
    $str1 .=$str2;

    // Returning the result
    return $str1;
}

// Given string
$str1 = "Geeks";
$str2 = "for";
$str3 = "Geeks";

// function calling
$str = append_string ($str1, $str2);
$str = append_string ($str, $str3);

// Printing the result
echo $str;
?>

Output

GeeksforGeeks

Using Concatenation Operator(“.”): The Concatenation operator is used to append a string str1 with another string str2 by concatenation of str1 and str2.

Syntax:

$x . $y

Example :

PHP

<?php
// PHP program to append a string


// Function to append a string
function append_string ($str1, $str2){

    // Using Concatenation assignment
    // operator (.)
    $str = $str1 . $str2;

    // Returning the result
    return $str;
}

// Given string
$str1 = "Geeks";
$str2 = "for";
$str3 = "Geeks";

// Function calling
$str = append_string ($str1, $str2);
$str = append_string ($str, $str3);

// Printing the result
echo $str;
?>

Output

GeeksforGeeks