Reverse string in PHP; Through this tutorial, you will learn, how to reverse a string in PHP without using string function and how to reserve a string using string function, how to reverse a string using a loop in PHP, PHP reverse words in a string.
Reverse String in PHP
Here will learn you two ways to reverse a string in PHP. The following two ways are:-
- Reverse string in PHP without using string function PHP
- Reserve a string with using string function in PHP
Reverse string in PHP without using string function PHP
Here will create a PHP program to reverse a string in PHP without using string function. Let’s follow the below steps for creating a PHP program for reverse a string without using function:-
- Declare a PHP variable and assign the string to a variable
- Using the assigned variable, Calculate the length of string
- Declare a variable in which you have stored a reverse string
- iterate the string with for loop
- Concatenate the string inside the for loop
- Print the reversed string
<?php
//declare variable and assign a string
$str = "Hello";
//count length of string using php count function
$count = strlen($str);
//Declare a variable in which you have stored a reverse string
$revStr = '';
for ($i=($count-1) ; $i >= 0 ; $i--)
{
// stored a string
$revStr .= $str[$i];
}
// print $revStr variable, it will return reverse string
print_r($revStr);
?>
Source Code – Reverse string without using string function In php
<!DOCTYPE html>
<html lang="en">
<head>
<title>Reverse string in PHP without using string function PHP </title>
</head>
<body>
<h4>Reverse string in PHP without using string function PHP </h4>
<?php
//declare variable and assign a string
$str = "Hello";
//count length of string using php count function
$count = strlen($str);
//Declare a variable in which you have stored a reverse string
$revStr = '';
for ($i=($count-1) ; $i >= 0 ; $i--)
{
// stored a string
$revStr .= $str[$i];
}
// print $revStr variable, it will return reverse string
print_r($revStr);
?>
</body>
</html>
Reserve a string with using string function in PHP
You can reverse a string In PHP using the inbuilt PHP function strrev().
Here you will learn how to reverse a string using the PHP strrev() function. We will create a PHP program to reverse a string using the inbuilt PHP function strrev(). Let’s follow the below steps for that.
- Declare a PHP variable and assign the string to a variable
- Put a declare variable into inside the strrev() and print it
<?php $str = "Hello World!"; echo "Reverse string of $string is " .strrev( $str ); ?>
Source Code – Reverse a string with using strrev() Function In PHP
<!DOCTYPE html>
<html lang="en">
<head>
<title>Reverse string in PHP with using strrev() string function PHP </title>
</head>
<body>
<h4>Reverse string in PHP with using strrev() string function PHP </h4>
<?php
$str = "Hello World!";
echo "Reverse string of $string is " .strrev( $str );
?>
</body>
</html>
Conclusion
In this reverse string in PHP tutorial. You have learned how to reverse a string in PHP without using any function In PHP and also learn how to reverse a string using inbuilt PHP function strrev().
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