- <?php 
-   
- function in_array_all($needles, $haystack) { 
- } 
-   
- $_POST['palavra'] = "Tudo bem com você ?"; 
-   
- $palavrasChaves = ["você", "bem", "?"]; 
-   
- if (isset($_POST['palavra']) && $palavra = $_POST['palavra']) { 
-   
-     if (in_array_all($palavrasChaves, $pedacos)) { 
-         echo "Bem e você ?"; 
-     } else { 
-         echo "Não estou bem."; 
-     } 
- } 
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