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<?php class C{ public $foo = 5; public function foo(){echo "foo is evidently a callable function!";} } $o=new C(); if(is_int($o->foo)){ echo "foo is an integer!\n"; } if(is_callable(["C", "foo"] )){ echo "foo IS callable!\n"; }else{ echo "foo IS NOT callable!\n"; } $o->foo();
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
foo is an integer! foo IS NOT callable! foo is evidently a callable function!
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 foo is an integer! foo IS NOT callable! foo is evidently a callable function!
Output for 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
foo is an integer! foo IS callable! foo is evidently a callable function!
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