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<?php function wtf(array $arrayUnderTest) { echo is_callable($test) ? 'This is a callable' : 'This is not a callable'; echo "\n"; echo is_array($test) ? 'This is an array' : 'This is not an array'; $test(); } class x { function foo() { print "\nfoo"; } } $x = new x(); $test = array($x, "foo"); wtf($test);
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
Warning: Undefined variable $test in /in/giKvE on line 4 This is not a callable Warning: Undefined variable $test in /in/giKvE on line 6 This is not an array Warning: Undefined variable $test in /in/giKvE on line 7 Fatal error: Uncaught Error: Value of type null is not callable in /in/giKvE:7 Stack trace: #0 /in/giKvE(19): wtf(Array) #1 {main} thrown in /in/giKvE on line 7
Process exited with code 255.
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 Warning: Undefined variable $test in /in/giKvE on line 4 This is not a callable Warning: Undefined variable $test in /in/giKvE on line 6 This is not an array Warning: Undefined variable $test in /in/giKvE on line 7 Fatal error: Uncaught Error: Value of type null is not callable in /in/giKvE:7 Stack trace: #0 /in/giKvE(19): wtf(Array) #1 {main} thrown in /in/giKvE on line 7
Process exited with code 255.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
Notice: Undefined variable: test in /in/giKvE on line 4 This is not a callable Notice: Undefined variable: test in /in/giKvE on line 6 This is not an array Notice: Undefined variable: test in /in/giKvE on line 7 Fatal error: Uncaught Error: Function name must be a string in /in/giKvE:7 Stack trace: #0 /in/giKvE(19): wtf(Array) #1 {main} thrown in /in/giKvE on line 7
Process exited with code 255.
Output for 7.3.32 - 7.3.33
This is not a callable This is not an array Fatal error: Uncaught Error: Function name must be a string in /in/giKvE:7 Stack trace: #0 /in/giKvE(19): wtf(Array) #1 {main} thrown in /in/giKvE on line 7
Process exited with code 255.
Output for 5.4.2 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28
Notice: Undefined variable: test in /in/giKvE on line 4 This is not a callable Notice: Undefined variable: test in /in/giKvE on line 6 This is not an array Notice: Undefined variable: test in /in/giKvE on line 7 Fatal error: Function name must be a string in /in/giKvE on line 7
Process exited with code 255.
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