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<?php error_reporting( E_ALL ); $in = array(); $foo = 'f1'; $bar = 'b1'; if ( ! isset( $in[$foo][$bar] ) ) { $in[$foo][$bar] = array(); } print_r( $in ); $ob = new stdClass(); if ( ! isset( $ob->$foo->$bar ) ) { $ob->$foo->$bar = array(); } print_r( $ob );
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [f1] => Array ( [b1] => Array ( ) ) ) Fatal error: Uncaught Error: Attempt to assign property "b1" on null in /in/g4uvN:15 Stack trace: #0 {main} thrown in /in/g4uvN on line 15
Process exited with code 255.

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