- Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
- Run on both PHP 5 and PHP 7 string
- Output for 5.6.0 - 5.6.40
- Run on both PHP 5 and PHP 7 boolean
<?php
$foo = substr("foo",3);
if(strlen($foo) == 0){
echo "Run on both PHP 5 and PHP 7\n";
echo gettype($foo); //boolean on PHP 5 and string on PHP 7
}