Online PHP editor | refs for lon7l

<?php // test a simple array_map in the real world. function test_array_map($data){ return array_map(function($row){ return array( 'productId' => $row['id'] + 1, 'productName' => $row['name'], 'desc' => $row['remark'] ); }, $data); } // Another with local variable $i function test_array_map_use_local($data){ $i = 0; return array_map(function($row) use ($i) { $i++; return array( 'productId' => $row['id'] + $i, 'productName' => $row['name'], 'desc' => $row['remark'] ); }, $data); } // test a simple foreach in the real world function test_foreach($data){ $result = array(); foreach ($data as $row) { $tmp = array(); $tmp['productId'] = $row['id'] + 1; $tmp['productName'] = $row['name']; $tmp['desc'] = $row['remark']; $result[] = $tmp; } return $result; } // Another with local variable $i function test_foreach_use_local($data){ $result = array(); $i = 0; foreach ($data as $row) { $i++; $tmp = array(); $tmp['productId'] = $row['id'] + $i; $tmp['productName'] = $row['name']; $tmp['desc'] = $row['remark']; $result[] = $tmp; } return $result; } $data = array_fill(0, 10000, array( 'id' => 1, 'name' => 'test', 'remark' => 'ok' )); $tests = array( 'array_map' => array(), 'foreach' => array(), 'array_map_use_local' => array(), 'foreach_use_local' => array(), ); for ($i = 0; $i < 100; $i++){ foreach ($tests as $testName => &$records) { $start = microtime(true); call_user_func("test_$testName", $data); $delta = microtime(true) - $start; $records[] = $delta; } } // output result: foreach ($tests as $name => &$records) { printf('%.4f : %s '.PHP_EOL, array_sum($records) / count($records), $name); }