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<?php $arr = array( array( 'countryid' => 38 ), array( 'currency' => 'GBP', 'countryid' => 109 ), array( 'currency' => 'GBP', 'countryid' => 136 ), array( 'currency' => 'GBP', 'countryid' => 94 ), array( 'currency' => 'GBP') ); $map = array_combine(array_map(function($v){ return $v['countryid']; }, $arr), $arr); print_r($map);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Warning: Undefined array key "countryid" in /in/354Sg on line 11 Array ( [38] => Array ( [countryid] => 38 ) [109] => Array ( [currency] => GBP [countryid] => 109 ) [136] => Array ( [currency] => GBP [countryid] => 136 ) [94] => Array ( [currency] => GBP [countryid] => 94 ) [] => Array ( [currency] => GBP ) )
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 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 index: countryid in /in/354Sg on line 11 Array ( [38] => Array ( [countryid] => 38 ) [109] => Array ( [currency] => GBP [countryid] => 109 ) [136] => Array ( [currency] => GBP [countryid] => 136 ) [94] => Array ( [currency] => GBP [countryid] => 94 ) [] => Array ( [currency] => GBP ) )
Output for 7.3.32 - 7.3.33
Array ( [38] => Array ( [countryid] => 38 ) [109] => Array ( [currency] => GBP [countryid] => 109 ) [136] => Array ( [currency] => GBP [countryid] => 136 ) [94] => Array ( [currency] => GBP [countryid] => 94 ) [] => Array ( [currency] => GBP ) )
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, expecting ')' in /in/354Sg on line 11
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, expecting ')' in /in/354Sg on line 11
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/354Sg on line 11
Process exited with code 255.

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