Conversion sur 58 dimensions différentes

                               

                            
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/*
 Titre : Conversion sur 58 dimensions différentes                                                                      
                                                                                                                          
 Date édition     : 15 Fev 2019                                                                                          
 Date mise a jour : 26 Aout 2019
                                                                                         
 Rapport de la maj:                                                                                                       
  - fonctionnement du code vérifié                                                                                  
*/
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      function conv_metrique($x , $origine , $destination){
     $const = array(); 
     $const["A"] = 1.00*pow(10, 10); 
     $const["ua"] = 6.69*pow(10, -12); 
     $const["bar"] = 0.0762; 
     $const["bo"] = 2.73*pow(10, -02); 
     $const["cable"] = 0.00456; 
     $const["cm"] = 100; 
     $const["chain1"] = 3.28*pow(10, -02); 
     $const["chain2"] = 0.049709; 
     $const["cub"] = 2.1872; 
     $const["dm"] = 10; 
     $const["Dm"] = 0.1; 
     $const["ell"] = 0.875; 
     $const["fathom"] = 0.546805453; 
     $const["p"] = 3.2813; 
     $const["pb"] = 3.280843; 
     $const["pa"] = 3.280833; 
     $const["fur"] = 0.004971; 
     $const["mn"] = 9.8425; 
     $const["hm"] = 0.01; 
     $const["inchuk"] = 39.3701; 
     $const["inchus"] = 39.37008; 
     $const["km"] = 0.001; 
     $const["n"] = 0.000539665; 
     $const["ln"] = 0.000179866; 
     $const["ls"] = 0.000207; 
     $const["al"] = 1.04949*pow(10, -16); 
     $const["ligne"] = 472.4335; 
     $const["lf"] = 22.5581; 
     $const["linka"] = 3.2808; 
     $const["linkb"] = 0.2011684; 
     $const["Mm"] = 1.00*pow(10, 06); 
     $const["uum"] = 1.00*pow(10, 12); 
     $const["um"] = 1000000; 
     $const["mil"] = 39370; 
     $const["mile"] = 0.00051938; 
     $const["mile b"] = 0.000621373; 
     $const["mile n"] = 0.00054; 
     $const["mile s"] = 0.000621; 
     $const["mm"] = 1000; 
     $const["mum"] = 1.00*pow(10, 09); 
     $const["mym"] = 10000; 
     $const["ob"] = 17.4978; 
     $const["pas"] = 1.31; 
     $const["pasuk"] = 1.31; 
     $const["paume"] = 13.1234; 
     $const["parsec"] = 3.24*pow(10, -17); 
     $const["per"] = 0.198839; 
     $const["picai"] = 236.22048; 
     $const["picap"] = 237.1063; 
     $const["point"] = 2834.6278; 
     $const["rod"] = 0.1988; 
     $const["corde"] = 0.16404; 
     $const["sk"] = 0.00911; 
     $const["cd"] = 1.56*pow(10, 06); 
     $const["yd"] = 1.0936; 
     $const["yduk"] = 1.093614; 
     $const["ydus"] = 1.093611; 
     $const["m"] = 1; 
      
     $nom = array(); 
     $nom["A"] = "Angstrom"; 
     $nom["ua"] = "unité astronomique"; 
     $nom["bar"] = "barleycorn britannique"; 
     $nom["bo"] = "bolt américain"; 
     $nom["cable"] = "cable"; 
     $nom["cm"] = "centimètre"; 
     $nom["chain1"] = "chain (engineers ou ramdens)"; 
     $nom["chain2"] = "chain (géomètre ou gunters)"; 
     $nom["cub"] = "cubit"; 
     $nom["dm"] = "decimètre"; 
     $nom["Dm"] = "décamètre"; 
     $nom["ell"] = "ell"; 
     $nom["fathom"] = "fathom"; 
     $nom["p"] = "pied"; 
     $nom["pb"] = "pied britannique"; 
     $nom["pa"] = "pied américain"; 
     $nom["fur"] = "furlong"; 
     $nom["mn"] = "main"; 
     $nom["hm"] = "hectomètre"; 
     $nom["inchuk"] = "pouce britannique"; 
     $nom["inchus"] = "pouce américain"; 
     $nom["km"] = "kilomètre"; 
     $nom["n"] = "noeud"; 
     $nom["ln"] = "league nautique"; 
     $nom["ls"] = "league (statute)"; 
     $nom["al"] = "année lumière"; 
     $nom["ligne"] = "ligne britannique"; 
     $nom["lf"] = "ligne franà§aise"; 
     $nom["linka"] = "link (engineers ou ramdens)"; 
     $nom["linkb"] = "link (surveyors ou gunters)"; 
     $nom["Mm"] = "megamètre"; 
     $nom["uum"] = "micromicron"; 
     $nom["um"] = "micron"; 
     $nom["mil"] = "mil"; 
     $nom["mile"] = "mile"; 
     $nom["mile b"] = "mile britannique"; 
     $nom["mile n"] = "mile nautique"; 
     $nom["mile s"] = "mile (statute)"; 
     $nom["mm"] = "millimeter"; 
     $nom["mum"] = "millimicron"; 
     $nom["mym"] = "myriamètre"; 
     $nom["ob"] = "ongle britannique"; 
     $nom["pas"] = "pas"; 
     $nom["pasuk"] = "pas britannique"; 
     $nom["paume"] = "paume britannique"; 
     $nom["parsec"] = "parsec"; 
     $nom["per"] = "perche"; 
     $nom["picai"] = "pica (imprimerie)"; 
     $nom["picap"] = "pica (imprimante)"; 
     $nom["point"] = "point (imprimerie)"; 
     $nom["rod"] = "rod (géomètre ou gunters)"; 
     $nom["corde"] = "corde britannique"; 
     $nom["sk"] = "skein"; 
     $nom["cd"] = "longueur d\'onde rouge du cadmium"; 
     $nom["yd"] = "yard"; 
     $nom["yduk"] = "yard britannique"; 
     $nom["ydus"] = "yard américain"; 
     $nom['m'] = "mètre"; 
      
     if (!in_array($origine, array_keys($const) )){ 
       return $nom; 
     } 
     if (!in_array( $destination, array_keys($const))){ 
       return $nom; 
     } 
      
     $retour = array(); 
     $retour['valeur'] = $x*$const[$destination]/$const[$origine]; 
     $retour['nom'] = $nom[$destination]; 
     $retour['unite'] = $destination; 
     return $retour; 
    }

?>