REFERAT INFORMATICA: ACCESUL LA DATE - PHP

Incarcat la data: 06 Februarie 2009

Autor: luminita carol

Pret: 50 credite

Majoritatea programelor PHP folosesc formularele HTML pentru a obtine date de intrare, in cadrul acestui modul, veti invata sa obtineti accesul la datele trimise unui program PHP prin intermediul unui formular HTML. De asemenea, veti invata sa obtineri accesul la datele stocate in variabilele de mediu pe parte de client, respectiv pe parte de server. Variabilele de mediu stocheaza informatii utile despre browsere, servere Web si PHP. Obtinerea si utilizarea datelor de la un formular Deoarece PHP a fost conceput ca limbaj de scripting pentru Web, faciliteaza accesul la variabilele transmise de catre formularele HTML. In modulul precedent, ati invatat sa creati formulare HTML. Iata un formular HTML simplu, care include o caseta cu text: Un formular HTML simplu

Tastati niste date:


Observati ca atributul NAME al etichetei INPUT atribuie casetei cu text numele date. In cazul in care creati un script denumit phpinfo.php, care executa functia phpinfo() si o stocheaza in acelasi dosar ca si formularul, prin expedierea formularului se cere scriptului sa afiseze un raport care indica starea serverului de aplicatie PHP. In sectiunea intitulata "Variabile PHP", raportul de stare prezinta valorile variabilelor din formular. Figura 4-1 prezinta raportul de stare asociat formularului HTML simplu. Retineri ca raportul de stare are doua coloane. Numele variabilei asociate controlului din formular, in speta date, apare in coloana din stanga, inglobat in textul HTTP_POST_VARSa"date"i. Valoarea variabilei, care reprezinta textul introdus de utilizator, este prezentata in coloana din dreapta. In figura, valoarea variabilei o constituie textul "acestea sunt datele". Un raport de stare PHP, care indica valoarea variabilei din formular denumita date PHP Variables PHP_SELF/Ibmccarty/php/module-04/phpinfo.php HTTP_POST_VARSa"date"i this is data Intrebare: Constructia HTTP_POST_VARSa"date"i este suspect de asemanatoare cu o referinta la un tablou. Despre ce este vorba? Raspuns: Daca ati observat parantezele drepte si v-ati reamintit ca ele sunt asociate cu tablourile PHP, atunci sunteti o persoana extrem de atenta. Daca nu, parcurgeti rapid sectiunea intitulata "Valori scalare si tablouri" din Modulul 2. In momentul expedierii unui formular, numele si valorile variabilelor incluse in formular sunt inserate in tabloul HTTP_POST_VARS. Cheia fiecarui element al tabloului este numele unei variabile din formular; valoarea elementului din tablou determina valoarea variabilei. Daca doriti, puteti obtine accesul la variabilele formularului folosind tabloul HTTP_POST_VARS; cu toate acestea, veti invata in curand modalitati mult mai convenabile de acces la variabilele unui formular.

Textul de mai sus reprezinta un extras din "REFERAT INFORMATICA: ACCESUL LA DATE - PHP". Pentru versiunea completa a documentului apasa butonul Download si descarca fisierul pe calculatorul tau. Prin descarcarea prezentei lucrari stiintifice, orice utilizator al site-ului www.studentie.ro declara si garanteaza ca este de acord cu utilizarile permise ale acesteia, in conformitate cu prevederile legale ablicabile in domeniul proprietatii intelectuale si in domeniul educatiei din legislatia in vigoare.

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Important!

Referatele si lucrarile oferite de Studentie.ro au scop educativ si orientativ pentru cercetare academica.

Iti recomandam ca referatele pe care le downloadezi de pe site sa le utilizezi doar ca sursa de inspiratie sau ca resurse educationale pentru conceperea unui referat nou, propriu si original.

Comentarii

from flight or ground control. Lack of information by the control tower or delayed instructions are major factors contributing to accidents.,

example is obviously serious. Losing all engine power is even more serious as illustrated by the ,

During the era of decolonization newlyborn Asian countries started to embrace air transport. ,

PetersburgTampa Airboat Line.citation needed The minute flight traveled between St. ,

system of lighted airways a task that had been begun by the Post Office Department. ,

"legacy airlines" as did their lowcost counterparts in many other countries.,

as walkthough gate detectors are not reliable in detecting metal in shoes or on the lower body extremities. ,

There is no data on the relative contributions of large droplets small particles close contact surface contamination and no data on the relative,

This can happen because of pilot error poor weather or a fault with the aircraft.citation needed Overrun is a type ,

This is due to the fact that the fan of a highbypass turbofan engine typical on transport aircraft ,

CATSA uses xray machines to verify the contents of all carryons as well as metal detectors explosive trace detection ETD ,

The economics of charter flights demand that the flights operate on the basis of near seat occupancy.,

Generally people are screened through airport security into the concourses where the exit gates to the aircraft are located. ,

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