{"id":537,"date":"2014-04-15T07:18:24","date_gmt":"2014-04-15T06:18:24","guid":{"rendered":"http:\/\/lig-membres.imag.fr\/denisb\/?p=537"},"modified":"2014-04-15T07:18:24","modified_gmt":"2014-04-15T06:18:24","slug":"caracteres-speciaux","status":"publish","type":"post","link":"https:\/\/lig-membres.imag.fr\/denisb\/caracteres-speciaux\/","title":{"rendered":"<!--:fr-->Caract\u00e8res sp\u00e9ciaux<!--:--><!--:en-->Special chars<!--:-->"},"content":{"rendered":"<p><!--:fr-->Pour une application web, il faut s&#8217;attendre \u00e0 ce qu&#8217;une chaine de caract\u00e8res issue d&#8217;un input, d&#8217;un prompt ou d&#8217;une textarea passent par du javascript, une url, php, du sql, du json et revienne en html, css, svg, en alert via le mail ou dans un eval ou une expression r\u00e9guli\u00e8re.<\/p>\n<p>Dans l&#8217;ordre alphab\u00e9tique :<\/p>\n<ul>\n<li>alert<\/li>\n<li>css<\/li>\n<li>eval<\/li>\n<li>expression r\u00e9guli\u00e8re<\/li>\n<li>html<\/li>\n<li>input<\/li>\n<li>javascript<\/li>\n<li>json<\/li>\n<li>mail<\/li>\n<li>php<\/li>\n<li>prompt<\/li>\n<li>sql<\/li>\n<li>svg<\/li>\n<li>textarea<\/li>\n<li>url<\/li>\n<\/ul>\n<p>O\u00f9 l&#8217;on trouve des langages de programmation, des formats de donn\u00e9es, des fonctions et des formats de communication.<\/p>\n<p>Il ne faut pas esp\u00e9rer qu&#8217;une chaine de caract\u00e8res puisse traverser tout cela sans soucis. Et malheureusement, les embuches d\u00e9pendent de l&#8217;\u00e9tape.<\/p>\n<p>Les caract\u00e8res g\u00eanants peuvent \u00eatre (selon l&#8217;\u00e9tape) :<\/p>\n<ul>\n<li>les lettres accentu\u00e9es ou comportant de petits ajouts : \u00e0, \u00e9, \u00ea, \u00e7, \u00f1, &#8230;<\/li>\n<li>les caract\u00e8res d\u00e9limitant : &#8220;, &#8216;, &lt;, &gt;, [, ], &#8230;<\/li>\n<li>les caract\u00e8res d&#8217;\u00e9chappement : \\, &amp;, &#8230;<\/li>\n<li>les caract\u00e8res sp\u00e9ciaux : $, _, ?, =, &#8230;<\/li>\n<\/ul>\n<p>Pour constater l&#8217;\u00e9tendue du probl\u00e8me, regarder ce qui est dit, juste pour certains langage de programmation : <a href=\"http:\/\/rosettacode.org\/wiki\/Special_characters\">http:\/\/rosettacode.org\/wiki\/Special_characters<\/a><!--:--><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Pour une application web, il faut s&#8217;attendre \u00e0 ce qu&#8217;une chaine de caract\u00e8res issue d&#8217;un input, d&#8217;un prompt ou d&#8217;une 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