Modernize Your PHP Code

Transcript

1. foolab.ca | @foolabca
   Modernize Your PHP
   Code
   IPC, Berlin - June 10, 2015
   

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2. Anna Filina
   • Developer
   • Problem solver
   • Teacher
   • Advisor
   • FooLab + ConFoo
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3. Objectives
   • Simplify code
   • Improve design
   • Increase maintainability
   • Make coding more pleasant
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4. Namespaces
   // 5.3
   // Avoid name collisions between classes.
   $my_user = new MyProject\Entity\User();
   $lib_user = new SomeLibrary\Entity\User();
   // Alias to long names.
   use Company\Project\Framework\Entity as Entity
   $user = new Entity\User();
   // Try Composer!
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5. Closures / Anonymous Functions
   // 5.3
   // Assign to a variable
   $filter_function = function($item) { ... };
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6. Closures / Anonymous Functions
   // Callback functions
   $products = array(
   array("name" => "Skyrim", "price" => 30),
   array("name" => "Destiny", "price" => 50)
   );
   $results = array_filter($products, function($item)
   {
   return $item["price"] <= 40;
   });
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7. Traits
   // 5.4
   // Import groups of properties and methods
   trait TextOverlay {
   function setText() { ... }
   function setFontSize() { ... }
   }
   trait ImageBackground {
   function setUrl() { ... }
   }
   class FacebookQuote {
   use TextOverlay;
   use ImageBackground;
   }
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8. Finally
   // 5.5
   // Practical if you want to execute code whether
   there is or no exception.
   try {
   create_temp_file();
   write_to_temp_file();
   output_temp_file();
   }
   catch(SomeException $e) {
   echo "Some error";
   }
   finally {
   delete_temp_file();
   }
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9. Short Array Syntax
   // 5.4
   // Hard to read a complex structure.
   $products = array(
   array(
   "name" => "Skyrim",
   "price" => 30,
   "requirements" => array(
   "os" => array("Win XP", "Win Vista", "Win 7"),
   "ram" => 2048
   )
   ),
   array(
   "name" => "Diablo 3",
   "price" => 50,
   "requirements" => array(
   "os" => array("Win XP", "Win Vista", "Win 7", "Win 8"),
   "ram" => 1024
   )
   )
   );
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10. Short Array Syntax
    $products = [
    [
    "name" => "Skyrim",
    "price" => 30,
    "requirements" =>
    [
    "os" => [ "Win XP", "Win Vista", "Win 7" ],
    "ram" => 2048
    ]
    ],
    [
    "name" => "Diablo 3",
    "price" => 50,
    "requirements" =>
    [
    "os" => ["Win XP", "Win Vista", "Win 7", "Win 8"],
    "ram" => 1024
    ]
    ]
    ];
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11. Password Functions
    // 5.5
    $pass = password_hash("mypass", PASSWORD_BCRYPT, [
    "cost" => 12,
    "salt" => mcrypt_create_iv(22, MCRYPT_DEV_URANDOM)
    ]);
    // Between .25 et .50 seconds
    if (password_verify($form_password, $db_password))
    {...}
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12. Foreach With List
    // 5.5
    $shape = [
    [0, 0],
    [2, 4],
    [4, 0]
    ];
    foreach ($shape as list($x, $y)) {
    line_to_coords($x, $y);
    }
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13. Argument Unpacking
    // 5.6
    function addToCart($qty, $name, $price) {...}
    $product = ["Civilization V", 40];
    addToCart(1, ...$product);
    // addToCart(1, $product[0], $product[1]);
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14. Anna Filina
    • Development: PHP, JS, etc.
    • Fix problems: bugs, performance, etc.
    • Workshops: testing, Symfony, AngularJS, API, etc.
    • Advisor: testing strategy, legacy code, etc.
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15. @afilina afilina.com
    

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