{"id":15,"date":"2007-03-18T23:22:00","date_gmt":"2007-03-18T23:22:00","guid":{"rendered":"http:\/\/grummfy.be\/blog\/?p=15"},"modified":"2007-03-18T23:22:00","modified_gmt":"2007-03-18T23:22:00","slug":"jouons-aves-php-et-la-poo","status":"publish","type":"post","link":"https:\/\/grummfy.be\/blog\/15","title":{"rendered":"Jouons aves PHP et la poo"},"content":{"rendered":"

Amusons nous avec PHP4, et PHP5 en poo.<\/p>\n

Comparons le comportement de ceci :<\/p>\n

class<\/span> A
{<\/span>
    function<\/span> A(<\/span>)<\/span>
    {<\/span><\/pre>\n
\n<\/p>\n
        echo<\/span><\/a> 'Je me nome A'<\/span> . \" <\/span>\"<\/span>;
    }<\/span>

    function<\/span> B(<\/span>)<\/span>
    {<\/span>
        echo<\/span><\/a> 'Je me nome B'<\/span> . \" <\/span>\"<\/span>;
    }<\/span>

}<\/span>
 
class<\/span> B extends<\/span> A
{<\/span>
    function<\/span> C(<\/span>)<\/span>
    {<\/span>
        echo<\/span><\/a> 'Je me nome C'<\/span> . \" <\/span>\"<\/span>;
    }<\/span>
}<\/span>

class<\/span> C extends<\/span> B
{<\/span>
 
}<\/span>
 
$B<\/span> = new<\/span> B(<\/span>)<\/span>;
$C<\/span> = new<\/span> C(<\/span>)<\/span>;<\/pre>\n
    \n
  • en PHP4 :
    \n
    \n
    Je me nome B
    \n Je me nome C<\/p>\n<\/blockquote>\n<\/li>\n
  • en PHP5
    \n
    \n
    Je me nome A 
    Je me nome A<\/p>\n<\/blockquote>\n<\/li>\n<\/ul>\n
      Avant tout il faut savoi<\/ins>r que en PHP, si une class enfant n’as pas de constructeur d\u00e9fini, c’est le constructeur parent qui sera appel\u00e9.<\/p>\n
     En PHP5, on peux le voir c’est effectivement le cas.
    Mais en PHP4, cela ne semble pas tout a fait juste.<\/p>\n
    Changeons un peu le code, en rempla\u00e7ant :
     function C()<\/code>
    par
    function Cbis()<\/code> 
    Et l\u00e0 le r\u00e9sultat pour PHP4 change :<\/p>\n
    \n
    Je me nome B
    \n Je me nome B<\/p>\n<\/blockquote>\n
    C’est toujours utile a savoir… et surtotu cela peux \u00e9viter de longue heures de debug …<\/p>\n","protected":false},"excerpt":{"rendered":"
    Amusons nous avec PHP4, et PHP5 en poo.<\/p>\n
     Comparons le comportement de ceci :<\/p>\n
    class<\/span> A
    {<\/span>
        function<\/span> A(<\/span>)<\/span>
        {<\/span><\/pre>\n
    <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"webmentions_disabled_pings":false,"webmentions_disabled":false,"footnotes":""},"categories":[10],"tags":[22,110,23,24],"class_list":["post-15","post","type-post","status-publish","format-standard","hentry","category-php","tag-jouons","tag-php","tag-poo","tag-programmation"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/grummfy.be\/blog\/wp-json\/wp\/v2\/posts\/15","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/grummfy.be\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/grummfy.be\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/grummfy.be\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/grummfy.be\/blog\/wp-json\/wp\/v2\/comments?post=15"}],"version-history":[{"count":0,"href":"https:\/\/grummfy.be\/blog\/wp-json\/wp\/v2\/posts\/15\/revisions"}],"wp:attachment":[{"href":"https:\/\/grummfy.be\/blog\/wp-json\/wp\/v2\/media?parent=15"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/grummfy.be\/blog\/wp-json\/wp\/v2\/categories?post=15"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/grummfy.be\/blog\/wp-json\/wp\/v2\/tags?post=15"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}