strrev(): PHP String Reverse

echo strrev($input_string);

$input_string: Input string to be reversed
Output is the string after reversing input string.

The origial ( input string ) remains same.

We can reverse any string by applying strrev() function. Here is what a normal string will look like.

The string = This is a test

The new string after applying the strrev function is here

 tset a si sihT

Here is the code

$st="This is a test";
echo "The string = ".$st."<br>";
$st=strrev($st);
echo "The new string after applying the strrev function = ".$st."<br>";

Printing the string in reverse without using strrev() function.

Here is the code.

<?Php
$st="Hello world";
//echo $st[4];
$length=strlen($st);
for($i=$length-1;$i>=0;$i--){
echo $st[$i];
}
?>

Output is here

dlrow olleH

This function support utf-8 encoding and does not work with unicode strings.

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PHP String Functions