<?php $instances_a = array( 'hello' => 'world' ); $instances_ao = new ArrayObject( $instances_a ); $instances_ai = new ArrayIterator( $instances_a ); foreach ( array( $instances_a, $instances_ao, $instances_ai ) as $instances ) { if ( ( is_array( $instances ) && array_key_exists( 'hello', $instances ) ) || isset( $instances[ 'hello' ] ) ) { echo "Exists\n"; } }
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Value for `_results` contains invalid data `array`