Untitled

//functions.php

<?php

function tabela_emails($emails) {
    echo '<table><tr><th>Email</th><th>Nome</th></tr>';
    asort($emails);
    foreach($emails as $email => $nome) {
        echo '<tr>' . '<td>' . $email . '</td>' . '<td>' . $nome . '</td>' . '</tr>';
    }
    echo '</table>';
}

function devolve_maior($num1, $num2, $num3) {
    if(is_numeric($num1) && is_numeric($num2) && is_numeric($num3) ) {
        if($num1 > $num2 && $num1 > $num3) {
            return $num1;
        }
        else if($num2 > $num1 && $num2 > $num3) {
            return $num2;
        }
        else {
            return $num3;
        }
    }
    else {
        return null;
    }
}

function inverte_string($str) {
    if(is_string($str)) {
        return strrev($str);
    }
    else {
        return null;
    }
}

//php06.php

<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
        <title>PHP: Utilização de associativos</title>
    </head>

    <body>
        <?php
            $emails = array("joao@mail.pt"=>"João Silva", "jorge@mail.pt"=>"Jorge Pereira", "sonia@mail.pt"=>"Sónia Silva", "ana@mail.pt"=>"Ana Duarte");

            foreach($emails as $email => $nome) {
                echo $email . ' - ' . $nome . '<br>';
            }

        ?>
    </body>
</html>

//php07.php

<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
        <title>PHP: Produção HTML + Funções</title>
    </head>

    <body>
        <?php
            $emails = array("joao@mail.pt"=>"João Silva", "jorge@mail.pt"=>"Jorge Pereira", "sonia@mail.pt"=>"Sónia Silva", "ana@mail.pt"=>"Ana Duarte");

            tabela_emails($emails);

            function tabela_emails($emails) {
                echo '<table><tr><th>Email</th><th>Nome</th></tr>';
                asort($emails);
                foreach($emails as $email => $nome) {
                    echo '<tr>' . '<td>' . $email . '</td>' . '<td>' . $nome . '</td>' . '</tr>';
                }
                echo '</table>';
            }
        ?>
    </body>
</html>

//php08.php

<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
        <title>PHP: Inclusão Ficheiros</title>
    </head>

    <body>
        <?php

            require_once('include/functions.php');
            $emails = array("joao@mail.pt"=>"João Silva", "jorge@mail.pt"=>"Jorge Pereira", "sonia@mail.pt"=>"Sónia Silva", "ana@mail.pt"=>"Ana Duarte");
            tabela_emails($emails);

        ?>
    </body>
</html>

//php09.php

<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
        <title>PHP: Funções Numéricas</title>
    </head>

    <body>
        <?php

            require_once('include/functions.php');
            $numero = devolve_maior(10,3,6);

            echo $numero;

        ?>
    </body>
</html>

//php10.php

<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
        <title>PHP: Funções de Strings</title>
    </head>

    <body>
        <?php

            require_once('include/functions.php');
            $string_invertida = inverte_string("MARIA");

            echo $string_invertida;

        ?>
    </body>
</html>