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Kurs PHP
Programski jezik za dinamicke web stranice
Predavanje 4
- Poredjenja varijabli
- Sta su nizovi
- Vrste nizova
- Sintaksa nizova
- Sortiranje nizova
- Brisanje iz nizova
- Unija I razlika izmedju nizova
- Multidimenzionalni nizovi
<?php echo ‘Recap’ ?>
- Postoji nekolio kondicionalnih uslova poredjenja u PHP
- IF/ELSE uslov
- IF/ELSE IF/ELSE uslov
- Nested IF/ELSE
<?php echo ‘IF & ELSE u PHP’ ?>
<?php echo ‘IF & ELSE u PHP’ ?>
Primjer 1 – Kondicionalna poredjenja
https://github.com/newPrimitives/php-kurs/blob/master/lecture4/comparing.php
<?php echo ‘Primjer’ ?>
- Logika I primjena switch-a I If uslova je ista
- Switch se preferira u slucajevima velikog broja poredjenja zbog bolje
preglednosti koda
<?php echo ‘Switch u PHP’ ?>
Primjer 2 – Switch u PHP
https://github.com/newPrimitives/php-kurs/blob/master/lecture4/switch.php
<?php echo ‘Primjer’ ?>
- Napisati program koji racuna vrijednost poreza na dohodak od iznosa
uplate te ispisuje porez I kolicinu novca koja ostane. Uzeti u obzir da se
iznos do 300 KM ne oporezuje, te da je porez na dohodak 10%.
<?php echo ‘Vjezba 1’ ?>
Uplata: 400KM
Porez: 40KM
Ostatak: 360KM
Uplata 200KM
Porez: 0KM
Ostatak: 200KM
- Petljama u programiranju se postize efekat iteracije bez nepotrebnog
dupliciranje koda. Postoje 3 vrste petlji u PHP a to su:
- For loop
- While loop
- Do while loop
<?php echo ‘Petlje u PHP’ ?>
- Najcesca upotreba for petlje je u situacijama kada je poznato koliko puta
odredjena akcija treba da se izvrsi.
<?php echo ‘For loop’ ?>
Primjer 3 – For loop
https://github.com/newPrimitives/php-kurs/blob/master/lecture4/forLoop.php
<?php echo ‘Primjer’ ?>
- Skinuti starter template za vjezbu 2
- Koristeci for petlju ispisati sadrzaj inicijaliziranog niza u HTML select
formu
<?php echo ‘Vjezba 2’ ?>
- Efekat while petlje je identican efektu for loop petlje, medjutim razlika
je u samoj implementaciji.
- While petlja se najcesce koristi u situacijama kada nije poznato koliko
puta se neki kod izvrsava.
<?php echo ‘While & do while petlje’ ?>
Primjer 4 – While petlja
https://github.com/newPrimitives/php-kurs/blob/master/lecture4/whileLoop.php
<?php echo ‘Primjer’ ?>
- Koristi se najcese za iteraciju nizova ili objekata I jako je popularna zbog
svoje “logicne” sintakse
<?php echo ‘Foreach petlja’ ?>
Primjer 4 – While petlja
https://github.com/newPrimitives/php-kurs/blob/master/lecture4/foreach.php
<?php echo ‘Primjer’ ?>
.htaccess
- .htaccess je konfiguracijski file na web serverima koje koristi Apache
Web server
- .htaccess file sluzi za modifikaciju defaultnih postavki servera
- Modificiranjem .htaccess file-a modifikuju se ponasanja svih file-ova
unutar tog foldera
- Ukoliko se .htaccess file nalazi u root folter, napisana pravila uticu na
kompletan site
<?php echo ‘.htaccess file’ ?>
- Modifikacija izgleda error page-a
- Zastita fajlova passwordom
- Server side ukljucivanje passworda
- Blokiranje pristupa stranici sa odredjene IP adrese
- Promjena defaultne server stranice (index.html)
- Automatska redirekcija na drugu stranicu
<?php echo ‘Primjer koristenja .htaccess file’ ?>
<?php echo ‘Primjer koristenja .htaccess’ ?>
# Uklanjanje .php ekstenzije iz URL-a:
RewriteEngine On
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^([^.]+)$ $1.php [NC,L]
Primjer 5 – Ostale .htaccess komande
https://github.com/newPrimitives/php-kurs/blob/master/lecture4/foreach.php
<?php echo ‘Primjer’ ?>
- Skinuti starter template za zadacu iz Lekcije 4
- Inicijalizirati varijablu ‘$user’ koja govori da li je user admin, user, ili
guest (string).
- Koristeci for ili while petlju ispisati sve naslove, clanke, slike i linkove
- Ukoliko je user ‘admin’ vidi clanke, i ispod clanka pise izvor clanka koji
vodi na novi link.
- Ukoliko gleda kao ‘user’ vidi sve osim linka.
- Ukoliko gleda kao guest vidi clanak i ispod pise ‘Potrebno je da budete
logovani da bi ste vidjeli ovaj sadzraj.’
<?php echo ‘Zadaca’ ?>
Primjer 5 – Starter template za zadacu
https://github.com/newPrimitives/php-kurs/blob/master/lecture4/homeworkStarterTemplate.php
<?php echo ‘Primjer’ ?>
- If & Else u PHP
- Switch
- For petlja
- While & do while petlje
- Foreach petlja
- .htacces file primjer I koristenje
<?php echo ‘To sum up’?>
<?php echo ‘Pitanja’?>

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PHP za pocetnike - predavanje 4

  • 1. Kurs PHP Programski jezik za dinamicke web stranice Predavanje 4
  • 2. - Poredjenja varijabli - Sta su nizovi - Vrste nizova - Sintaksa nizova - Sortiranje nizova - Brisanje iz nizova - Unija I razlika izmedju nizova - Multidimenzionalni nizovi <?php echo ‘Recap’ ?>
  • 3. - Postoji nekolio kondicionalnih uslova poredjenja u PHP - IF/ELSE uslov - IF/ELSE IF/ELSE uslov - Nested IF/ELSE <?php echo ‘IF & ELSE u PHP’ ?>
  • 4. <?php echo ‘IF & ELSE u PHP’ ?>
  • 5. Primjer 1 – Kondicionalna poredjenja https://github.com/newPrimitives/php-kurs/blob/master/lecture4/comparing.php <?php echo ‘Primjer’ ?>
  • 6. - Logika I primjena switch-a I If uslova je ista - Switch se preferira u slucajevima velikog broja poredjenja zbog bolje preglednosti koda <?php echo ‘Switch u PHP’ ?>
  • 7. Primjer 2 – Switch u PHP https://github.com/newPrimitives/php-kurs/blob/master/lecture4/switch.php <?php echo ‘Primjer’ ?>
  • 8. - Napisati program koji racuna vrijednost poreza na dohodak od iznosa uplate te ispisuje porez I kolicinu novca koja ostane. Uzeti u obzir da se iznos do 300 KM ne oporezuje, te da je porez na dohodak 10%. <?php echo ‘Vjezba 1’ ?> Uplata: 400KM Porez: 40KM Ostatak: 360KM Uplata 200KM Porez: 0KM Ostatak: 200KM
  • 9. - Petljama u programiranju se postize efekat iteracije bez nepotrebnog dupliciranje koda. Postoje 3 vrste petlji u PHP a to su: - For loop - While loop - Do while loop <?php echo ‘Petlje u PHP’ ?>
  • 10. - Najcesca upotreba for petlje je u situacijama kada je poznato koliko puta odredjena akcija treba da se izvrsi. <?php echo ‘For loop’ ?>
  • 11. Primjer 3 – For loop https://github.com/newPrimitives/php-kurs/blob/master/lecture4/forLoop.php <?php echo ‘Primjer’ ?>
  • 12. - Skinuti starter template za vjezbu 2 - Koristeci for petlju ispisati sadrzaj inicijaliziranog niza u HTML select formu <?php echo ‘Vjezba 2’ ?>
  • 13. - Efekat while petlje je identican efektu for loop petlje, medjutim razlika je u samoj implementaciji. - While petlja se najcesce koristi u situacijama kada nije poznato koliko puta se neki kod izvrsava. <?php echo ‘While & do while petlje’ ?>
  • 14. Primjer 4 – While petlja https://github.com/newPrimitives/php-kurs/blob/master/lecture4/whileLoop.php <?php echo ‘Primjer’ ?>
  • 15. - Koristi se najcese za iteraciju nizova ili objekata I jako je popularna zbog svoje “logicne” sintakse <?php echo ‘Foreach petlja’ ?>
  • 16. Primjer 4 – While petlja https://github.com/newPrimitives/php-kurs/blob/master/lecture4/foreach.php <?php echo ‘Primjer’ ?>
  • 18. - .htaccess je konfiguracijski file na web serverima koje koristi Apache Web server - .htaccess file sluzi za modifikaciju defaultnih postavki servera - Modificiranjem .htaccess file-a modifikuju se ponasanja svih file-ova unutar tog foldera - Ukoliko se .htaccess file nalazi u root folter, napisana pravila uticu na kompletan site <?php echo ‘.htaccess file’ ?>
  • 19. - Modifikacija izgleda error page-a - Zastita fajlova passwordom - Server side ukljucivanje passworda - Blokiranje pristupa stranici sa odredjene IP adrese - Promjena defaultne server stranice (index.html) - Automatska redirekcija na drugu stranicu <?php echo ‘Primjer koristenja .htaccess file’ ?>
  • 20. <?php echo ‘Primjer koristenja .htaccess’ ?> # Uklanjanje .php ekstenzije iz URL-a: RewriteEngine On RewriteCond %{REQUEST_FILENAME} !-f RewriteRule ^([^.]+)$ $1.php [NC,L]
  • 21. Primjer 5 – Ostale .htaccess komande https://github.com/newPrimitives/php-kurs/blob/master/lecture4/foreach.php <?php echo ‘Primjer’ ?>
  • 22. - Skinuti starter template za zadacu iz Lekcije 4 - Inicijalizirati varijablu ‘$user’ koja govori da li je user admin, user, ili guest (string). - Koristeci for ili while petlju ispisati sve naslove, clanke, slike i linkove - Ukoliko je user ‘admin’ vidi clanke, i ispod clanka pise izvor clanka koji vodi na novi link. - Ukoliko gleda kao ‘user’ vidi sve osim linka. - Ukoliko gleda kao guest vidi clanak i ispod pise ‘Potrebno je da budete logovani da bi ste vidjeli ovaj sadzraj.’ <?php echo ‘Zadaca’ ?>
  • 23. Primjer 5 – Starter template za zadacu https://github.com/newPrimitives/php-kurs/blob/master/lecture4/homeworkStarterTemplate.php <?php echo ‘Primjer’ ?>
  • 24. - If & Else u PHP - Switch - For petlja - While & do while petlje - Foreach petlja - .htacces file primjer I koristenje <?php echo ‘To sum up’?>