<?php phpversion() >= "7.0.0" or die(); $foo = 'foo'; $bar = new stdClass; $bar->$foo = array(10, 20, 30); // $bar->foo => array(10, 20, 30) $bar->$foo[0] = 42; // dynamic prop $f = 42 fr 0 offset of ‘foo’ $bar->$foo[0] = 42; // zeroth element of array $foo set to 42 print_r($bar);
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