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<?php $cosas = array( 'true' => TRUE, 'false' => FALSE, 'null' => NULL, 'empty' => "", 'positive' => 1, 'negative' => -1, 'zero' => 0 ); foreach($cosas as $nombre => $cosa) { echo "* $nombre\n"; echo "\tisset:\t" . ( isset($cosa) ? "TRUE" : "FALSE" ) . "\n"; echo "\ti_null:\t" . ( is_null($cosa) ? "TRUE" : "FALSE" ) . "\n"; echo "\tempty:\t" . ( empty($cosa) ? "TRUE" : "FALSE" ) . "\n\n"; echo "\teval:\t" . ( eval($cosa) ? "TRUE" : "FALSE" ) . "\n\n"; }
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
* true isset: TRUE i_null: FALSE empty: FALSE Parse error: syntax error, unexpected end of file in /in/maR5o(17) : eval()'d code on line 1
Process exited with code 255.
Output for 5.4.11 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28
* true isset: TRUE i_null: FALSE empty: FALSE Parse error: syntax error, unexpected end of file in /in/maR5o(17) : eval()'d code on line 1 eval: FALSE * false isset: TRUE i_null: FALSE empty: TRUE eval: FALSE * null isset: FALSE i_null: TRUE empty: TRUE eval: FALSE * empty isset: TRUE i_null: FALSE empty: TRUE eval: FALSE * positive isset: TRUE i_null: FALSE empty: FALSE Parse error: syntax error, unexpected end of file in /in/maR5o(17) : eval()'d code on line 1 eval: FALSE * negative isset: TRUE i_null: FALSE empty: FALSE Parse error: syntax error, unexpected end of file in /in/maR5o(17) : eval()'d code on line 1 eval: FALSE * zero isset: TRUE i_null: FALSE empty: TRUE Parse error: syntax error, unexpected end of file in /in/maR5o(17) : eval()'d code on line 1 eval: FALSE
Output for 5.4.0 - 5.4.10
* true isset: TRUE i_null: FALSE empty: FALSE Parse error: syntax error, unexpected end of file in /in/maR5o(17) : eval()'d code on line 1 eval: FALSE * false isset: TRUE i_null: FALSE empty: TRUE eval: FALSE * null isset: FALSE i_null: TRUE empty: TRUE eval: FALSE * empty isset: TRUE i_null: FALSE empty: TRUE eval: FALSE * positive isset: TRUE i_null: FALSE empty: FALSE Parse error: syntax error, unexpected end of file in /in/maR5o(17) : eval()'d code on line 1 eval: FALSE * negative isset: TRUE i_null: FALSE empty: FALSE Parse error: syntax error, unexpected end of file in /in/maR5o(17) : eval()'d code on line 1 eval: FALSE * zero isset: TRUE i_null: FALSE empty: TRUE Parse error: syntax error, unexpected end of file in /in/maR5o(17) : eval()'d code on line 1 eval: FALSE
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
* true isset: TRUE i_null: FALSE empty: FALSE Parse error: syntax error, unexpected $end in /in/maR5o(17) : eval()'d code on line 1 eval: FALSE * false isset: TRUE i_null: FALSE empty: TRUE eval: FALSE * null isset: FALSE i_null: TRUE empty: TRUE eval: FALSE * empty isset: TRUE i_null: FALSE empty: TRUE eval: FALSE * positive isset: TRUE i_null: FALSE empty: FALSE Parse error: syntax error, unexpected $end in /in/maR5o(17) : eval()'d code on line 1 eval: FALSE * negative isset: TRUE i_null: FALSE empty: FALSE Parse error: syntax error, unexpected $end in /in/maR5o(17) : eval()'d code on line 1 eval: FALSE * zero isset: TRUE i_null: FALSE empty: TRUE Parse error: syntax error, unexpected $end in /in/maR5o(17) : eval()'d code on line 1 eval: FALSE
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
* true isset: TRUE i_null: FALSE empty: FALSE Parse error: parse error, unexpected $ in /in/maR5o(17) : eval()'d code on line 1 eval: FALSE * false isset: TRUE i_null: FALSE empty: TRUE eval: FALSE * null isset: FALSE i_null: TRUE empty: TRUE eval: FALSE * empty isset: TRUE i_null: FALSE empty: TRUE eval: FALSE * positive isset: TRUE i_null: FALSE empty: FALSE Parse error: parse error, unexpected $ in /in/maR5o(17) : eval()'d code on line 1 eval: FALSE * negative isset: TRUE i_null: FALSE empty: FALSE Parse error: parse error, unexpected $ in /in/maR5o(17) : eval()'d code on line 1 eval: FALSE * zero isset: TRUE i_null: FALSE empty: TRUE Parse error: parse error, unexpected $ in /in/maR5o(17) : eval()'d code on line 1 eval: FALSE
Process exited with code 255.
Output for 4.3.2 - 4.3.4
* true isset: TRUE i_null: FALSE empty: FALSE Parse error: parse error in /in/maR5o(17) : eval()'d code on line 1 eval: FALSE * false isset: TRUE i_null: FALSE empty: TRUE eval: FALSE * null isset: FALSE i_null: TRUE empty: TRUE eval: FALSE * empty isset: TRUE i_null: FALSE empty: TRUE eval: FALSE * positive isset: TRUE i_null: FALSE empty: FALSE Parse error: parse error in /in/maR5o(17) : eval()'d code on line 1 eval: FALSE * negative isset: TRUE i_null: FALSE empty: FALSE Parse error: parse error in /in/maR5o(17) : eval()'d code on line 1 eval: FALSE * zero isset: TRUE i_null: FALSE empty: TRUE Parse error: parse error in /in/maR5o(17) : eval()'d code on line 1 eval: FALSE
Process exited with code 255.
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