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<?php $cosas = array( 'true' => TRUE, 'false' => FALSE, 'null' => NULL, 'empty' => "", 'positive' => 1, 'negative' => -1, 'zero' => 0 ); $cosas = array_filter($cosas, function($k){ return strpos("o", $k) === FALSE; }); foreach($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"; echo "\teval:\t" . ( $cosa ? "TRUE" : "FALSE" ) . "\n\n"; }
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Deprecated: strpos(): Passing null to parameter #2 ($needle) of type string is deprecated in /in/Ygr6a on line 12 * true isset: TRUE i_null: FALSE empty: FALSE eval: TRUE * positive isset: TRUE i_null: FALSE empty: FALSE eval: TRUE * negative isset: TRUE i_null: FALSE empty: FALSE eval: TRUE * zero isset: TRUE i_null: FALSE empty: TRUE eval: FALSE
Output for 8.0.0 - 8.0.30
* true isset: TRUE i_null: FALSE empty: FALSE eval: TRUE * positive isset: TRUE i_null: FALSE empty: FALSE eval: TRUE * negative isset: TRUE i_null: FALSE empty: FALSE eval: TRUE * zero isset: TRUE i_null: FALSE empty: TRUE eval: FALSE
Output for 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
Deprecated: strpos(): Non-string needles will be interpreted as strings in the future. Use an explicit chr() call to preserve the current behavior in /in/Ygr6a on line 12 Deprecated: strpos(): Non-string needles will be interpreted as strings in the future. Use an explicit chr() call to preserve the current behavior in /in/Ygr6a on line 12 Deprecated: strpos(): Non-string needles will be interpreted as strings in the future. Use an explicit chr() call to preserve the current behavior in /in/Ygr6a on line 12 Warning: strpos(): Empty needle in /in/Ygr6a on line 12 Deprecated: strpos(): Non-string needles will be interpreted as strings in the future. Use an explicit chr() call to preserve the current behavior in /in/Ygr6a on line 12 Deprecated: strpos(): Non-string needles will be interpreted as strings in the future. Use an explicit chr() call to preserve the current behavior in /in/Ygr6a on line 12 Deprecated: strpos(): Non-string needles will be interpreted as strings in the future. Use an explicit chr() call to preserve the current behavior in /in/Ygr6a on line 12 * true isset: TRUE i_null: FALSE empty: FALSE eval: TRUE * 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 eval: TRUE * negative isset: TRUE i_null: FALSE empty: FALSE eval: TRUE * zero isset: TRUE i_null: FALSE empty: TRUE eval: FALSE
Output for 5.3.22 - 5.3.29, 5.4.12 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.32 - 7.3.33
Warning: strpos(): Empty needle in /in/Ygr6a on line 12 * true isset: TRUE i_null: FALSE empty: FALSE eval: TRUE * 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 eval: TRUE * negative isset: TRUE i_null: FALSE empty: FALSE eval: TRUE * zero isset: TRUE i_null: FALSE empty: TRUE eval: FALSE
Output for 5.3.0 - 5.3.21, 5.4.0 - 5.4.11
Warning: strpos(): Empty delimiter in /in/Ygr6a on line 12 * true isset: TRUE i_null: FALSE empty: FALSE eval: TRUE * 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 eval: TRUE * negative isset: TRUE i_null: FALSE empty: FALSE eval: TRUE * zero isset: TRUE i_null: FALSE empty: TRUE eval: FALSE
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/Ygr6a on line 12
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
Parse error: parse error, unexpected T_FUNCTION in /in/Ygr6a on line 12
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/Ygr6a on line 12
Process exited with code 255.

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