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run code in 300+ PHP versions simultaneously
<?php $n = new stdClass(); $n->dog = array(); $n->dog['und'][0]['value'] = '12345'; $d = 'dog'; echo $n->$d[0]['value'];
Output for git.master, git.master_jit
Warning: Undefined array key 0 in /in/mVbBt on line 7 Warning: Trying to access array offset on value of type null in /in/mVbBt on line 7
Output for rfc.property-hooks
Warning: Undefined array key 0 in /in/mVbBt on line 7 Warning: Trying to access array offset on null in /in/mVbBt on line 7

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