Reverse String

A string can be reversed either using strrev() function or simple PHP code.

For example, on reversing JAVATPOINT it will become TNIOPTAVAJ.

Logic:

• Assign the string to a variable.
• Calculate length of the string.
• Declare variable to hold reverse string.
• Run for loop.
• Concatenate string inside for loop.
• Display reversed string.

Reverse String using strrev() function

A reverse string program using strrev() function is shown.

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Example:

1. <?php  
2. $string = "JAVATPOINT";  
3. echo "Reverse string of $string is " .strrev ( $string );  
4. ?>  

Output:

Reverse String Without using strrev() function

A reverse string program without using strrev() function is shown.

Example:

1. <?php  
2. $string = "JAVATPOINT";  
3. $length = strlen($string);  
4. for ($i=($length-1) ; $i >= 0 ; $i--)   
5. {  
6.   echo $string[$i];  
7. }  
8. ?>  

Output: