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$foo = True; // assign the value TRUE to $foo
// == is an operator which test // equality and returns a boolean if ($action == "show_version") {echo "The version is 1.23";} // this is not necessary... if ($show_separators == TRUE) {echo "hr \n";} // ...because you can simply type if ($show_separators) {echo" hr \n";}
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echo gettype((bool) ""); // bool(false) echo gettype((bool) 1); // bool(true) echo gettype((bool) -2); // bool(true) echo gettype((bool) "foo"); // bool(true) echo gettype((bool) 2.3e5); // bool(true) echo gettype((bool) array(12)); // bool(true) echo gettype((bool) array()); // bool(false)
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