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<?php function test() { return "ok"; } echo "is_null ( ", var_export("", true), " ) = ", var_export(null, true), " \n";
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.31, 8.2.0 - 8.2.26, 8.3.0 - 8.3.14, 8.4.1
is_null ( '' ) = Fatal error: Uncaught Error: Call to undefined function  var_export() in /in/avsmu:7 Stack trace: #0 {main} thrown in /in/avsmu on line 7
Process exited with code 255.
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28
is_null ( '' ) = Fatal error: Call to undefined function  var_export() in /in/avsmu on line 7
Process exited with code 255.
Output for 4.4.5 - 4.4.9
is_null ( '' ) = Fatal error: Call to undefined function:  var_export() in /in/avsmu on line 7
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.4
is_null ( '' ) = Fatal error: Call to undefined function:  var_export() in /in/avsmu on line 7
Process exited with code 255.
Output for 4.3.0 - 4.3.1
is_null ( '' ) = Fatal error: Call to undefined function:  var_export() in /in/avsmu on line 7

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