Discussion :

[bouxroute]

Hello

Voici la fonction que j'utilise pour contrôler une adresse email...

Code :

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<?
function controle_syntaxe_email($email)
{
	$tableau_tld = array(
	"arpa","edu","gov","int","mil","biz","com","info","name","net","org","pro","ac","ad",
	"ae","af","ag","ai","al","am","an","ao","aq","ar","as","at","au","aw","ax","az","ba",
	"bb","bd","be","bf","bg","bh","bi","bj","bm","bn","bo","br","bs","bt","bw","by","bz",
	"ca","cc","cd","cf","cg","ch","ci","ck","cl","cm","cn","co","cr","cu","cv","cx","cy",
	"cz","de","dj","dk","dm","do","dz","ec","ee","eg","er","es","et","eu","fi","fj","fk",
	"fm","fo","fr","ga","gd","ge","gf","gg","gh","gi","gl","gm","gn","gp","gq","gr","gs",
	"gt","gu","gw","gy","hk","hm","hn","hr","ht","hu","id","ie","il","im","in","io","iq",
	"ir","is","it","je","jm","jo","jp","ke","kg","kh","ki","km","kn","kp","kr","kw","ky",
	"kz","la","lb","lc","li","lk","lr","ls","lt","lu","lv","ly","ma","mc","me","md","mg",
	"mh","mk","ml","mm","mn","mo","mp","mq","mr","ms","mt","mu","mv","mw","mx","my","mz",
	"na","nc","ne","nf","ng","ni","nl","no","np","nr","nu","nz","om","pa","pe","pf","pg",
	"ph","pk","pl","pn","pr","ps","pt","pw","py","qa","re","ro","rs","ru","rw","sa","sb",
	"sc","sd","se","sg","sh","si","sk","sl","sm","sn","sr","st","sv","sy","sz","tc","td",
	"tf","tg","th","tj","tk","tl","tm","tn","to","tr","tt","tv","tw","tz","ua","ug","uk",
	"us","uy","uz","va","vc","ve","vg","vi","vn","vu","wf","ws","ye","za","zm","zw"
					);
 
	if (eregi("^[_\.0-9a-zA-Z\-]+@([0-9a-zA-Z][0-9a-zA-Z.-]+)\.([a-zA-Z]{2,6})$",$email, $extraction_modele))
	{
		foreach($tableau_tld as $tld)
		{
			if((strlen($extraction_modele[2])==strlen($tld)) && eregi($tld,$extraction_modele[2]))
				return TRUE;
		}
 
		return FALSE;
	}
	else
		return FALSE;
}
?>

Celle-ci a déjà fait ses preuves, mais voilà qu'un cas de figure m'étonne:

Code :

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<?
$email = "\truc@domaine.fr";
 
if(controle_syntaxe_email($email))
	echo "email valide";
else
	echo "email invalide";
?>

L'exécution de ce code retourne "email valide".

Comment expliquer que le caractère d'échappement "\" arrive à passer mes restrictions au niveau de l'expression régulière ?

merci d'avance !

[s.n.a.f.u]

Salut,

Ton code renvoie un "email invalide" sur mon poste.

Peut-être un problème avec les magic_quote. Sont-ils désactivés ?
en effet, si je prend

Code :

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$email = "\\truc@domaine.fr";

je recois alors le message "email valide"...

[Korko Fain]

Juste pour faire mon chipoteur : eregi est déprécié.

[Doksuri]

Oh mon dieu... je devrais sortir plus souvent... je ne savais pas qu'il existait autant d'extensions >_<

sinon, je suis dans le meme cas que s.n.a.f.u : email invalide

[Korko Fain]

C'est un peu suicidaire de les citer toutes lol Surtout que certaines se créent, d'autres se déprécient etc... lol en général on regroupe par [a-z]{2} ^^

[Bisûnûrs]

Pour répondre à la question, je pense que ça vient de là :

Code :

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[_\.0-9a-zA-Z\-]

(mais vous l'aurez tous deviné)

Quand tu es dans les crochets, tu n'as pas besoin d'échapper les caractères réservés, ils sont interprétés comme caractère "réel" et non comme caractère spéciaux (d'ailleurs le tiret n'en est pas un).

Ce qui donne :

Code :

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[_.0-9a-zA-Z-]

En échappant ces caractères, tu autorisais en fait le backslash à faire partie des caractères autorisés.

[Doksuri]

(mais vous l'aurez tous deviné)

hehehe

Quand tu es dans les crochets, tu n'as pas besoin d'échapper les caractères

Merci pour l'info, c'est note =)

[bouxroute]

merci, ça roule comme ça...

je remet donc la fonction corrigée, pour ceux qui la veulent:

Code :

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function controle_syntaxe_email($email)
{
	$tableau_tld = array(
	"arpa","edu","gov","int","mil","biz","com","info","name","net","org","pro","ac","ad",
	"ae","af","ag","ai","al","am","an","ao","aq","ar","as","at","au","aw","ax","az","ba",
	"bb","bd","be","bf","bg","bh","bi","bj","bm","bn","bo","br","bs","bt","bw","by","bz",
	"ca","cc","cd","cf","cg","ch","ci","ck","cl","cm","cn","co","cr","cu","cv","cx","cy",
	"cz","de","dj","dk","dm","do","dz","ec","ee","eg","er","es","et","eu","fi","fj","fk",
	"fm","fo","fr","ga","gd","ge","gf","gg","gh","gi","gl","gm","gn","gp","gq","gr","gs",
	"gt","gu","gw","gy","hk","hm","hn","hr","ht","hu","id","ie","il","im","in","io","iq",
	"ir","is","it","je","jm","jo","jp","ke","kg","kh","ki","km","kn","kp","kr","kw","ky",
	"kz","la","lb","lc","li","lk","lr","ls","lt","lu","lv","ly","ma","mc","me","md","mg",
	"mh","mk","ml","mm","mn","mo","mp","mq","mr","ms","mt","mu","mv","mw","mx","my","mz",
	"na","nc","ne","nf","ng","ni","nl","no","np","nr","nu","nz","om","pa","pe","pf","pg",
	"ph","pk","pl","pn","pr","ps","pt","pw","py","qa","re","ro","rs","ru","rw","sa","sb",
	"sc","sd","se","sg","sh","si","sk","sl","sm","sn","sr","st","sv","sy","sz","tc","td",
	"tf","tg","th","tj","tk","tl","tm","tn","to","tr","tt","tv","tw","tz","ua","ug","uk",
	"us","uy","uz","va","vc","ve","vg","vi","vn","vu","wf","ws","ye","za","zm","zw"
					);
 
	if (eregi("^[_.0-9a-zA-Z-]+@([0-9a-zA-Z][0-9a-zA-Z.-]+)\.([a-zA-Z]{2,6})$",$email, $extraction_modele))
	{
		foreach($tableau_tld as $tld)
		{
			if((strlen($extraction_modele[2])==strlen($tld)) && eregi($tld,$extraction_modele[2]))
				return TRUE;
		}
 
		return FALSE;
	}
	else
		return FALSE;
}