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<?php trait setData { static function setData( $data ) { DataCollector::collectedData( 'set', $data ); } } trait dataHandler { use setData; static function getCollectedData() { DataCollector::collectedData( 'get' ); } } class DataCollector { use dataHandler; private static $CollectionData = array(); private static function collectedData( $type, $value = NULL ) { if( strtolower( $type ) === 'set' ) { $CollectionData[] = $value; var_dump($CollectionData); } elseif( strtolower( $type ) === 'get' ) return self::$CollectionData; } } class Form { use setData {} } class Field extends Form { public function __construct( $type, $text = NULL ) { DataCollector::setData( $type ); } } class A { use setData{} public function __construct( $type, $text = NULL ) { self::setData( $type ); } } $Field1 = new Field( '1' ); $Field2 = new Field( '2' ); $A = new A( '3' ); DataCollector::setData('4'); dataHandler::setData('5'); var_dump( dataHandler::getCollectedData() );
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
array(1) { [0]=> string(1) "1" } array(1) { [0]=> string(1) "2" } Fatal error: Uncaught Error: Call to private method DataCollector::collectedData() from scope A in /in/LKsiK:4 Stack trace: #0 /in/LKsiK(42): A::setData('3') #1 /in/LKsiK(48): A->__construct('3') #2 {main} thrown in /in/LKsiK on line 4
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 array(1) { [0]=> string(1) "1" } array(1) { [0]=> string(1) "2" } Fatal error: Uncaught Error: Call to private method DataCollector::collectedData() from scope A in /in/LKsiK:4 Stack trace: #0 /in/LKsiK(42): A::setData('3') #1 /in/LKsiK(48): A->__construct('3') #2 {main} thrown in /in/LKsiK on line 4
Process exited with code 255.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33
array(1) { [0]=> string(1) "1" } array(1) { [0]=> string(1) "2" } Fatal error: Uncaught Error: Call to private method DataCollector::collectedData() from context 'A' in /in/LKsiK:4 Stack trace: #0 /in/LKsiK(42): A::setData('3') #1 /in/LKsiK(48): A->__construct('3') #2 {main} thrown in /in/LKsiK on line 4
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.36, 5.6.0 - 5.6.28
array(1) { [0]=> string(1) "1" } array(1) { [0]=> string(1) "2" } Fatal error: Call to private method DataCollector::collectedData() from context 'A' in /in/LKsiK on line 4
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
Parse error: syntax error, unexpected T_STRING in /in/LKsiK on line 2
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_STRING in /in/LKsiK on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/LKsiK on line 2
Process exited with code 255.

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