{"id":257,"date":"2023-10-02T11:47:15","date_gmt":"2023-10-02T09:47:15","guid":{"rendered":"https:\/\/gdm.sosthe.sk\/?page_id=257"},"modified":"2023-10-02T11:47:15","modified_gmt":"2023-10-02T09:47:15","slug":"cvicenie-c-10-funkcie","status":"publish","type":"page","link":"https:\/\/gdm.sosthe.sk\/?page_id=257","title":{"rendered":"Cvi\u010denie \u010d.10 – Funkcie"},"content":{"rendered":"

T\u00e9ma:\u00a0Funkcie a ich pou\u017e\u00edvanie<\/h3>\n

\u00daloha:\u00a0Vytvorte s\u00fabor s n\u00e1zvom funkcia.php, ktor\u00fd bude obsahova\u0165 skript, pomocou ktor\u00e9ho vytvor\u00edte tabu\u013eku s ur\u010dit\u00fdm po\u010dtom st\u013apcov a riadkov. Potom vytvorte s\u00fabor tabulka.php zo skriptom, ktor\u00fd na\u010d\u00edta obsah s\u00faboru funkcia.php. V\u00fdstupom m\u00e1 by\u0165 vykreslenie tabu\u013eky zo zadan\u00fdm po\u010dtom riadkov a st\u013apcov, po spusten\u00ed skriptu tabulka.php.<\/h3>\n

Podmienky:\u00a0Vytvoren\u00fd dokument umiestnite na svoj blog v polo\u017eke PHP ako \u201eZadanie \u010d.10 Funkcie\u201c s pln\u00fdm znen\u00edm \u00falohy a odkazom na s\u00fabor tabulka.php<\/h3>\n

Te\u00f3ria :<\/h3>\n

Pr\u00edklad:\u00a0funkcia s\u00fa\u010dtu<\/p>\n

<?php\r\nfunction sucet($a,$b) \r\n{\r\n $c = $a + $b;\r\n $text = \"Zadan\u00e9 s\u00fa \u010d\u00edsla $a a $b. Ich s\u00fa\u010det je $c. <br \/>\";\r\n return $text;\r\n}\r\n$a = 5;\r\n$b = 8;\r\n$vysledok = sucet($a,$b);\r\necho $vysledok;\r\n?><\/pre>\n
V\u00fdsledok pr\u00edkladu:\u00a0funkcia s\u00fa\u010dtu
\nZadan\u00e9 s\u00fa \u010d\u00edsla 5 a 8. Ich s\u00fa\u010det je 13.<\/p>\n
Funkcia sa zavol\u00e1 nasleduj\u00facim sp\u00f4sobom:<\/p>\n
Pr\u00edklad:<\/p>\n
echo sucet(6,12);<\/pre>\n
V\u00fdsledok pr\u00edkladu:
\nZadan\u00e9 s\u00fa \u010d\u00edsla 6 a 12. Ich s\u00fa\u010det je 18.<\/p>\n
Pozn\u00e1mka
\nVo funkci\u00e1ch musia by\u0165 definovan\u00e9 v\u0161etky argumenty. Argumentom v\u0161ak m\u00f4\u017eeme priradi\u0165 predvolen\u00fa hodnotu. V takomto pr\u00edpade dan\u00e9 argumenty nemusia by\u0165 definovan\u00e9.<\/p>\n
Pr\u00edklad:<\/p>\n
<?php\r\nfunction sucet_novy($a=1,$b=1) \r\n{\r\n $c = $a + $b;\r\n $text = \"Zadan\u00e9 s\u00fa \u010d\u00edsla $a a $b. Ich s\u00fa\u010det je $c.\";\r\n return $text;\r\n}\r\necho sucet_novy(10,15).\"<br \/>\";\r\necho sucet_novy().\"<br \/>\";\r\necho sucet_novy(10).\"<br \/>\";\r\necho sucet_novy(0,15);\r\n?><\/pre>\n
V\u00fdsledok pr\u00edkladu:
\nZadan\u00e9 s\u00fa \u010d\u00edsla 10 a 15. Ich s\u00fa\u010det je 25.
\nZadan\u00e9 s\u00fa \u010d\u00edsla 1 a 1. Ich s\u00fa\u010det je 2.
\nZadan\u00e9 s\u00fa \u010d\u00edsla 10 a 1. Ich s\u00fa\u010det je 11.
\nZadan\u00e9 s\u00fa \u010d\u00edsla 0 a 15. Ich s\u00fa\u010det je 15.<\/p>\n
Defin\u00edcie funkci\u00ed m\u00f4\u017eeme ulo\u017ei\u0165 do samostatn\u00e9ho s\u00faboru, a potom ich pomocou\u00a0include()\u00a0alebo\u00a0require()\u00a0zahrn\u00fa\u0165 do skriptu.<\/p>\n
Pr\u00edklad:<\/em>\u00a0S\u00fabor s n\u00e1zvom funkcia.php<\/div>\n
<?php\r\nfunction zobraz_tabulku($riadky=2,$stlpce=2)\r\n{\r\n  $text = \"\";\r\n  for($i=1; $i<=$riadky*$stlpce; $i++)\r\n  {\r\n    if($i%$stlpce == 1) $text .= \"<tr>\";\r\n    $text .= \"<td>$i<\/td>\";\r\n    if($i%$stlpce == 0) $text .= \"<\/tr>\";\r\n  }\r\n  if($text) return \"<table border='1'>$text<\/table>\";\r\n}\r\n?>\r\n\r\n<\/pre>\n
Pr\u00edklad:<\/em>\u00a0S\u00fabor s n\u00e1zvom tabulka.php<\/div>\n
<!DOCTYPE HTML>\r\n<html>\r\n<head>\r\n  <title>Tabu\u013eka<\/title>\r\n<\/head>\r\n<body>\r\n<?php\r\n  include(\"funkcia.php\");\r\n  echo zobraz_tabulku(3,5);\r\n?><\/strong>\r\n<\/body>\r\n<\/html>\r\n<\/pre>\n
<\/div>\n
V\u00fdsledok pr\u00edkladu:<\/em><\/div>\n\n\n\n\n\n
1<\/td>\n2<\/td>\n3<\/td>\n4<\/td>\n5<\/td>\n<\/tr>\n
6<\/td>\n7<\/td>\n8<\/td>\n9<\/td>\n10<\/td>\n<\/tr>\n
11<\/td>\n12<\/td>\n13<\/td>\n14<\/td>\n15<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
Postup pri pr\u00e1ci :\u00a0Upravte vzorov\u00fd skript tak, aby sp\u013a\u0148al podmienky \u00falohy<\/h3>\n","protected":false},"excerpt":{"rendered":"
T\u00e9ma:\u00a0Funkcie a ich pou\u017e\u00edvanie \u00daloha:\u00a0Vytvorte s\u00fabor s n\u00e1zvom funkcia.php, ktor\u00fd bude obsahova\u0165 skript, pomocou ktor\u00e9ho vytvor\u00edte tabu\u013eku s ur\u010dit\u00fdm po\u010dtom st\u013apcov a riadkov. Potom vytvorte s\u00fabor tabulka.php zo skriptom, ktor\u00fd na\u010d\u00edta obsah s\u00faboru funkcia.php. V\u00fdstupom m\u00e1 by\u0165 vykreslenie tabu\u013eky zo zadan\u00fdm po\u010dtom riadkov a st\u013apcov, po spusten\u00ed skriptu tabulka.php. Podmienky:\u00a0Vytvoren\u00fd dokument umiestnite na svoj blog […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-257","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/gdm.sosthe.sk\/index.php?rest_route=\/wp\/v2\/pages\/257","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gdm.sosthe.sk\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/gdm.sosthe.sk\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/gdm.sosthe.sk\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gdm.sosthe.sk\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=257"}],"version-history":[{"count":1,"href":"https:\/\/gdm.sosthe.sk\/index.php?rest_route=\/wp\/v2\/pages\/257\/revisions"}],"predecessor-version":[{"id":258,"href":"https:\/\/gdm.sosthe.sk\/index.php?rest_route=\/wp\/v2\/pages\/257\/revisions\/258"}],"wp:attachment":[{"href":"https:\/\/gdm.sosthe.sk\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=257"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}