{"id":55,"date":"2013-04-03T22:10:46","date_gmt":"2013-04-03T20:10:46","guid":{"rendered":"http:\/\/www.lafabriquedecode.com\/blog\/?p=55"},"modified":"2013-04-03T22:46:11","modified_gmt":"2013-04-03T20:46:11","slug":"les-classes-abstraites-en-php-partie-3","status":"publish","type":"post","link":"http:\/\/www.lafabriquedecode.com\/blog\/2013\/04\/les-classes-abstraites-en-php-partie-3\/","title":{"rendered":"Les classes abstraites en PHP (partie 3)"},"content":{"rendered":"<pre class=\"brush: php; title: ; notranslate\" title=\"\">\r\nabstract class EtreVivant {\r\n    protected $_age;\r\n    protected $_poids;\r\n\r\n    public function getAge() {\r\n        echo &quot;J'ai &quot; . $this-&gt;_age . &quot; ans&quot;, PHP_EOL;\r\n    }\r\n\r\n    public function getPoids() {\r\n        echo &quot;Je p\u00e8se &quot; . $this-&gt;_poids . &quot; grammes&quot;, PHP_EOL;\r\n    }\r\n\r\n    public function __construct($age = 0, $poids = 0) {\r\n        $this-&gt;_age = $age;\r\n        $this-&gt;_poids = $poids;\r\n    }\r\n\r\n    \/\/ rajoutez les setters...\r\n}\r\n\r\ninterface Respiration {\r\n    public function respirer();\r\n}\r\n\r\ninterface Reproduction {\r\n    public function seReproduire();\r\n}\r\n\r\nabstract class Vegetal extends EtreVivant\r\n                       implements Respiration, Reproduction {\r\n    protected $_chlorophyllien = false;\r\n\r\n    public function respirer() {\r\n        echo &quot;Je fais ma photo-synth\u00e8se&quot;, PHP_EOL;\r\n    }\r\n\r\n    public function estChlorophyllien() {\r\n        return (true == $this-&gt;_chlorophyllien);\r\n    }\r\n}\r\n\r\nclass Lys extends Vegetal {\r\n    public function seReproduire() {\r\n        echo &quot;Le vent et les insectes font le travail&quot;, PHP_EOL;\r\n    }\r\n\r\n    public function __construct($age = 0, $poids = 0) {\r\n        $this-&gt;_chlorophyllien = true;\r\n        parent::__construct($age, $poids);\r\n    }\r\n}\r\n\r\n$lys = new Lys;\r\n$lys-&gt;seReproduire();\r\n$lys-&gt;respirer();\r\n$lys-&gt;getPoids();\r\n$lys-&gt;getAge();\r\n\r\necho (&quot;Je suis &quot;) .\r\n     (!$lys-&gt;estChlorophyllien() ? 'pas ' : '') .\r\n     &quot;chlorophyllien&quot;, PHP_EOL;\r\n<\/pre>\n<p>Pour r\u00e9sumer :<\/p>\n<ul>\n<li><span style=\"line-height: 14px;\">les classes abstraites ne s&rsquo;instancient pas, on en h\u00e9rite donc forc\u00e9ment !<\/span><\/li>\n<li>ce sont des d\u00e9buts d&rsquo;impl\u00e9mentation, elles peuvent comporter des m\u00e9thodes enti\u00e8rement ou partiellement \u00e9crites<\/li>\n<li>une classe abstraite n&rsquo;a pas forc\u00e9ment de m\u00e9thode abstraite&#8230;<\/li>\n<li>&#8230;mais une classe qui a une m\u00e9thode abstraite doit \u00eatre abstraite<\/li>\n<li>une m\u00e9thode abstraite n&rsquo;a pas de corps, c&rsquo;est un prototype : \u00e0 vous de la concr\u00e9tiser !<\/li>\n<li>une classe abstraite n&rsquo;est pas tenue de concr\u00e9tiser les m\u00e9thodes des interfaces qu&rsquo;elle impl\u00e9mente; ses filles oui, par contre !<\/li>\n<li>mettre une m\u00e9thode abstraite en mode d&rsquo;acc\u00e8s priv\u00e9 n&rsquo;a pas de sens<\/li>\n<li>une classe abstraite peut tr\u00e8s bien avoir des variables d&rsquo;instance<\/li>\n<\/ul>\n<p><span style=\"line-height: 24px;\">\u00a0PS : j&rsquo;ai remarqu\u00e9 que certains \u00e9l\u00e8ves \u00e9taient choqu\u00e9s de voir un constructeur dans une classe abstraite (\u00ab\u00a0Pourquoi y a-t-il un constructeur si on ne peut PAS les instancier ???\u00a0\u00bb). Ce constructeur a tout \u00e0 fait sa place, il peut \u00eatre utilis\u00e9 dans les classes filles ou bien \u00eatre compl\u00e9t\u00e9 dans celles-ci par des actions sp\u00e9cifiques (et invoqu\u00e9 via l&rsquo;appel statique <em>parent<\/em>, comme fait ici).\u00a0<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Pour r\u00e9sumer : les classes abstraites ne s&rsquo;instancient pas, on en h\u00e9rite donc forc\u00e9ment ! ce sont des d\u00e9buts d&rsquo;impl\u00e9mentation, elles peuvent comporter des m\u00e9thodes enti\u00e8rement ou partiellement \u00e9crites une classe abstraite n&rsquo;a pas forc\u00e9ment de m\u00e9thode abstraite&#8230; &#8230;mais une classe qui a une m\u00e9thode abstraite doit \u00eatre abstraite une m\u00e9thode abstraite n&rsquo;a pas de [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0},"categories":[3],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v19.6.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Les classes abstraites en PHP (partie 3) - La Fabrique de code - Tech blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"http:\/\/www.lafabriquedecode.com\/blog\/2013\/04\/les-classes-abstraites-en-php-partie-3\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Les classes abstraites en PHP (partie 3) - La Fabrique de code - Tech blog\" \/>\n<meta property=\"og:description\" content=\"Pour r\u00e9sumer : les classes abstraites ne s&rsquo;instancient pas, on en h\u00e9rite donc forc\u00e9ment ! ce sont des d\u00e9buts d&rsquo;impl\u00e9mentation, elles peuvent comporter des m\u00e9thodes enti\u00e8rement ou partiellement \u00e9crites une classe abstraite n&rsquo;a pas forc\u00e9ment de m\u00e9thode abstraite&#8230; &#8230;mais une classe qui a une m\u00e9thode abstraite doit \u00eatre abstraite une m\u00e9thode abstraite n&rsquo;a pas de [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"http:\/\/www.lafabriquedecode.com\/blog\/2013\/04\/les-classes-abstraites-en-php-partie-3\/\" \/>\n<meta property=\"og:site_name\" content=\"La Fabrique de code - Tech blog\" \/>\n<meta property=\"article:published_time\" content=\"2013-04-03T20:10:46+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2013-04-03T20:46:11+00:00\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary\" \/>\n<meta name=\"twitter:creator\" content=\"@LaFabrique2Code\" \/>\n<meta name=\"twitter:site\" content=\"@LaFabrique2Code\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"http:\/\/www.lafabriquedecode.com\/blog\/2013\/04\/les-classes-abstraites-en-php-partie-3\/\",\"url\":\"http:\/\/www.lafabriquedecode.com\/blog\/2013\/04\/les-classes-abstraites-en-php-partie-3\/\",\"name\":\"Les classes abstraites en PHP (partie 3) - La Fabrique de code - Tech blog\",\"isPartOf\":{\"@id\":\"http:\/\/www.lafabriquedecode.com\/blog\/#website\"},\"datePublished\":\"2013-04-03T20:10:46+00:00\",\"dateModified\":\"2013-04-03T20:46:11+00:00\",\"author\":{\"@id\":\"http:\/\/www.lafabriquedecode.com\/blog\/#\/schema\/person\/83863c048b82fd9ccf6407bddd241162\"},\"breadcrumb\":{\"@id\":\"http:\/\/www.lafabriquedecode.com\/blog\/2013\/04\/les-classes-abstraites-en-php-partie-3\/#breadcrumb\"},\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"http:\/\/www.lafabriquedecode.com\/blog\/2013\/04\/les-classes-abstraites-en-php-partie-3\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"http:\/\/www.lafabriquedecode.com\/blog\/2013\/04\/les-classes-abstraites-en-php-partie-3\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Accueil\",\"item\":\"http:\/\/www.lafabriquedecode.com\/blog\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Les classes abstraites en PHP (partie 3)\"}]},{\"@type\":\"WebSite\",\"@id\":\"http:\/\/www.lafabriquedecode.com\/blog\/#website\",\"url\":\"http:\/\/www.lafabriquedecode.com\/blog\/\",\"name\":\"La Fabrique de code - Tech blog\",\"description\":\"PHP objet, MySQL, Design Patterns, OOP...et plus !\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"http:\/\/www.lafabriquedecode.com\/blog\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"fr-FR\"},{\"@type\":\"Person\",\"@id\":\"http:\/\/www.lafabriquedecode.com\/blog\/#\/schema\/person\/83863c048b82fd9ccf6407bddd241162\",\"name\":\"admin\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"http:\/\/www.lafabriquedecode.com\/blog\/#\/schema\/person\/image\/\",\"url\":\"http:\/\/0.gravatar.com\/avatar\/fc2e1de7c8a1871b50ff9c6a6f8682a2?s=96&d=retro&r=g\",\"contentUrl\":\"http:\/\/0.gravatar.com\/avatar\/fc2e1de7c8a1871b50ff9c6a6f8682a2?s=96&d=retro&r=g\",\"caption\":\"admin\"},\"url\":\"http:\/\/www.lafabriquedecode.com\/blog\/author\/admin\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Les classes abstraites en PHP (partie 3) - La Fabrique de code - Tech blog","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"http:\/\/www.lafabriquedecode.com\/blog\/2013\/04\/les-classes-abstraites-en-php-partie-3\/","og_locale":"fr_FR","og_type":"article","og_title":"Les classes abstraites en PHP (partie 3) - La Fabrique de code - Tech blog","og_description":"Pour r\u00e9sumer : les classes abstraites ne s&rsquo;instancient pas, on en h\u00e9rite donc forc\u00e9ment ! 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