Loop Through Letters in a String with PHP

Iterating through a string to get each letter can be easily achieved with PHP. The example below shows how this can be done with a for loop:

1. $string = "HelloWorld";  
2.   
3. for ($i=0; $i<strlen($string); $i++) {  
4.     echo $string[$i].".";  
5. }  
6.   
7. // Outputs: H.e.l.l.o.W.o.r.l.d.  

Notice how we reference the individual letters like we would an array element. This also means we can get the letter at a certain point by referencing the letters index like so:

1. $string = "HelloWorld";  
2.   
3. echo $string[4];  
4.   
5. // Outputs: o