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<?php $arr = array( 'operator_id_1' => 'operator_bp_id_100', 'operator_id_2' => 'operator_bp_id_200', 'operator_id_3' => 'operator_bp_id_300', 'operator_id_4' => 'operator_bp_id_400' ); $keys = array_keys($arr); if (($key = array_search("operator_id_2", $keys) - 1) < 0) { $key = count($keys) - 1; } print $key;
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
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202.31 ms | 404 KiB | 293 Q