<?php class AA { public static function f1($a1) { print "Pass\n"; } public static function f0($a1) { AA::f1($a1); } } AA::f0("Hello World\n");
<?php class AA { public $aa1 = 0; public static function f1() { print "Pass\n"; return 1; } // public static function f0() { AA::f1(); } public static function f0() { if (AA::f1()) { echo "aa1 != 0\n"; } } } AA::f0();