The PHP strval() function is used to convert an Integer Into a String in PHP. There are many other methods to convert an integer into a string. 

In this article, we will learn many methods.

Using strval() function.

Note:  The strval() function is an inbuilt function in PHP and is used to convert any scalar value (string, integer, or double) to a string. We cannot use strval() on arrays or on object, if applied then this function only returns the type name of the value being converted.

Syntax:

strval( $variable ) 

Return value: This function returns a string. This string is generated by typecasting the value of the variable passed to it as a parameter.

Example: 

<?php
  
$var_name = 2;

// converts integer into string
$str =  strval($var_name);

// prints the value of above variable as a string
echo "Welcome $str GeeksforGeeks";

?>

Welcome 2 GeeksforGeeks

Using Inline variable parsing.

Note: When you use Integer inside a string, then the Integer is first converted into a string and then prints as a string.

Syntax: 

$integer = 2;
echo "$integer";

Example:

<?php
  
$var_name = 2;


// prints the value of above variable
// as a string
echo "Welcome $var_name GeeksforGeeks";

?>

Welcome 2 GeeksforGeeks

Using Explicit Casting.

Note: Explicit Casting is the explicit conversion of data type because the user explicitly defines the data type in which he wants to cast. We will convert Integer into String.

Syntax:

$str = (string)$var_name

Example:

<?php
  
$var_name = 2;

//Typecasting Integer into string
$str = (string)$var_name;

// prints the value of above variable as a string
echo "Welcome $str GeeksforGeeks";

?>

Welcome 2 GeeksforGeeks

Using sprintf() Function

The sprintf() function writes a formatted string to a variable.

Syntax:

$str = sprintf("%d", $var_name);

Example: 

<?php 
$var_name = 2; 

// Using sprintf to convert integer to string 
$str = sprintf("%d", $var_name); 

// Prints the value of above variable as a string 
echo "Welcome $str GeeksforGeeks"; 
?>

Output:

Welcome 2 GeeksforGeeks

Using concatenation with an Empty String

Concatenating an integer with an empty string in PHP converts the integer to a string. This approach leverages the automatic type conversion in PHP, making it simple and intuitive. For example, `$string = $integer . “”;` effectively turns `$integer` into a string.

Example:

<?php
$integer = 123;
$string = $integer . "";
echo $string; // Outputs: 123
?>

123

Using settype() Function

Another method to convert an integer to a string in PHP is by using the settype() function. This function sets the type of a variable, converting it to the specified type.

Syntax:

settype($variable, "string");

Example:

<?php
$integer = 1000;
settype($integer, "string");
echo "Converted string = " . $integer;
?>

Converted string = 1000