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102 lines
2.1 KiB
PHP
102 lines
2.1 KiB
PHP
--TEST--
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ZE2 An interface is inherited
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--FILE--
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<?php
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interface if_a {
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function f_a();
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}
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interface if_b extends if_a {
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function f_b();
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}
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class base {
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function _is_a($sub) {
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echo 'is_a('.get_class($this).', '.$sub.') = '.(($this instanceof $sub) ? 'yes' : 'no')."\n";
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}
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function test() {
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echo $this->_is_a('base');
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echo $this->_is_a('derived_a');
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echo $this->_is_a('derived_b');
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echo $this->_is_a('derived_c');
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echo $this->_is_a('derived_d');
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echo $this->_is_a('if_a');
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echo $this->_is_a('if_b');
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echo "\n";
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}
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}
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class derived_a extends base implements if_a {
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function f_a() {}
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}
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class derived_b extends base implements if_a, if_b {
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function f_a() {}
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function f_b() {}
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}
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class derived_c extends derived_a implements if_b {
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function f_b() {}
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}
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class derived_d extends derived_c {
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}
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$t = new base();
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$t->test();
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$t = new derived_a();
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$t->test();
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$t = new derived_b();
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$t->test();
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$t = new derived_c();
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$t->test();
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$t = new derived_d();
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$t->test();
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?>
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--EXPECT--
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is_a(base, base) = yes
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is_a(base, derived_a) = no
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is_a(base, derived_b) = no
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is_a(base, derived_c) = no
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is_a(base, derived_d) = no
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is_a(base, if_a) = no
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is_a(base, if_b) = no
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is_a(derived_a, base) = yes
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is_a(derived_a, derived_a) = yes
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is_a(derived_a, derived_b) = no
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is_a(derived_a, derived_c) = no
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is_a(derived_a, derived_d) = no
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is_a(derived_a, if_a) = yes
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is_a(derived_a, if_b) = no
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is_a(derived_b, base) = yes
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is_a(derived_b, derived_a) = no
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is_a(derived_b, derived_b) = yes
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is_a(derived_b, derived_c) = no
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is_a(derived_b, derived_d) = no
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is_a(derived_b, if_a) = yes
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is_a(derived_b, if_b) = yes
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is_a(derived_c, base) = yes
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is_a(derived_c, derived_a) = yes
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is_a(derived_c, derived_b) = no
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is_a(derived_c, derived_c) = yes
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is_a(derived_c, derived_d) = no
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is_a(derived_c, if_a) = yes
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is_a(derived_c, if_b) = yes
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is_a(derived_d, base) = yes
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is_a(derived_d, derived_a) = yes
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is_a(derived_d, derived_b) = no
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is_a(derived_d, derived_c) = yes
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is_a(derived_d, derived_d) = yes
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is_a(derived_d, if_a) = yes
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is_a(derived_d, if_b) = yes
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