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71 lines
1.7 KiB
Plaintext
71 lines
1.7 KiB
Plaintext
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--TEST--
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Closure 046: Rebinding: preservation of previous scope when "static" given as scope arg (same as closure #041)
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--FILE--
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<?php
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/* It's impossible to preserve the previous scope when doing so would break
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* the invariants that, for non-static closures, having a scope is equivalent
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* to having a bound instance. */
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$nonstaticUnscoped = function () { var_dump(isset(A::$priv)); var_dump(isset($this)); };
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class A {
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private static $priv = 7;
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function getClosure() {
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return function() { var_dump(isset(A::$priv)); var_dump(isset($this)); };
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}
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}
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class B extends A {}
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$a = new A();
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$nonstaticScoped = $a->getClosure();
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echo "Before binding", "\n";
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$nonstaticUnscoped(); echo "\n";
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$nonstaticScoped(); echo "\n";
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echo "After binding, no instance", "\n";
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$d = $nonstaticUnscoped->bindTo(null, "static"); $d(); echo "\n";
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$d = $nonstaticScoped->bindTo(null, "static"); $d(); echo "\n";
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//$d should have been turned to static
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$d->bindTo($d);
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echo "After binding, with same-class instance for the bound one", "\n";
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$d = $nonstaticUnscoped->bindTo(new A, "static"); $d(); echo "\n";
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$d = $nonstaticScoped->bindTo(new A, "static"); $d(); echo "\n";
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echo "After binding, with different instance for the bound one", "\n";
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$d = $nonstaticScoped->bindTo(new B, "static"); $d(); echo "\n";
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echo "Done.\n";
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--EXPECTF--
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Before binding
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bool(false)
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bool(false)
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bool(true)
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bool(true)
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After binding, no instance
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bool(false)
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bool(false)
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bool(true)
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bool(false)
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Warning: Cannot bind an instance to a static closure in %s on line %d
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After binding, with same-class instance for the bound one
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bool(false)
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bool(true)
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bool(true)
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bool(true)
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After binding, with different instance for the bound one
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bool(true)
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bool(true)
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Done.
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