php，// 示例：使用 PDO 实现多条件查询，$sql = "SELECT * FROM table WHERE col1 = :value1 AND col2 = :value2";，$stmt = $pdo>prepare($sql);，$stmt>execute([':value1' => $value1, ':value2' => $value2]);，``php，// 示例：使用 PDO 实现多条件查询，$sql = "SELECT * FROM table WHERE col1 = :value1 AND col2 = :value2";，$stmt = $pdo>prepare($sql);，$stmt>execute([':value1' => $value1, ':value2' => $value2]);，``php，$sql = "SELECT field1, field2, field3 FROM table_name";，``&& 和 ||）来实现多条件查询。，，``javascript，const data = [， { name: 'Alice', age: 25, city: 'New York' },， { name: 'Bob', age: 30, city: 'San Francisco' },， { name: 'Charlie', age: 35, city: 'Los Angeles' }，];，，const result = data.filter(item => item.age > 25 && item.city === 'San Francisco');，console.log(result);，``，，这段代码会筛选出年龄大于 25 且城市为旧金山的对象。Powered By Z-BlogPHP 1.7.3
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