<?php $array = array_fill(0, 100000, true); function is_indexed_foreach($array) { $n = 0; foreach ($array as $key => $_) { if ($key !== $n++) { return false; } } return true; } function is_indexed_range($array) { return array_keys($array) === range(0, count($array) - 1); } printf("%.2f mb\n", memory_get_peak_usage() / 1024 / 1024); is_indexed_foreach($array); printf("%.2f mb\n", memory_get_peak_usage() / 1024 / 1024); is_indexed_range($array); printf("%.2f mb\n", memory_get_peak_usage() / 1024 / 1024);
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Value for `_results` contains invalid data `array`