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<?php $data[] = 0; $data[] = 0.0; $data[] = '0'; $data[] = NULL; $data[] = false; $data[] = true; $data[] = 1; $data[] = 1.1; $data[] = 0.1; $data[] = 'STARTED'; foreach ($data as $value) { if (empty($value) && (string)$value !== "0") { echo var_dump($value) . ' <b>is empty</b><br>'; } else { echo var_dump($value) . ' <b>is not empty</b><br>'; } }
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
int(0) <b>is not empty</b><br>float(0) <b>is not empty</b><br>string(1) "0" <b>is not empty</b><br>NULL <b>is empty</b><br>bool(false) <b>is empty</b><br>bool(true) <b>is not empty</b><br>int(1) <b>is not empty</b><br>float(1.1) <b>is not empty</b><br>float(0.1) <b>is not empty</b><br>string(7) "STARTED" <b>is not empty</b><br>
preferences:
276.86 ms | 406 KiB | 355 Q