PHP will run all files with the following extensions by default:-
.php
.php3
.php4
.php5
.php4 files will run under PHP4, .php5 files will run under PHP5 by default. .php files will run under the default PHP version (5).
PHP will run all files with the following extensions by default:-
.php
.php3
.php4
.php5
.php4 files will run under PHP4, .php5 files will run under PHP5 by default. .php files will run under the default PHP version (5).