kurs:php9.9
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| + | ====== Geltungsbereich für Variablen ====== | ||
| + | <code php> | ||
| + | <?php | ||
| + | function add($a,$b){ | ||
| + | global $z; // erweitert Geltungsbereich | ||
| + | $z = 10; // Zuweisung gilt im ganzen Script | ||
| + | print('Test $z in add-Funktion '.$z.'<br>'); | ||
| + | return $a + $b; | ||
| + | } | ||
| + | function plus($a){ | ||
| + | $b = 100; | ||
| + | $a++; | ||
| + | ++$b; | ||
| + | print('Test $b in plus-Function '.$b.'<br>'); | ||
| + | return $a; | ||
| + | } | ||
| + | #### Main #### | ||
| + | $z = 30; // wird überschrieben | ||
| + | add(4,9); | ||
| + | print('Test $z in Main '.$z.'<br>'); | ||
| + | $b = 20; | ||
| + | $a = plus(20); | ||
| + | echo '$a -> '.$a.' $b -> '.$b.'<br>'; | ||
| + | ?></code> | ||
| + | |||
| + | **Ausgabe**\\ | ||
| + | Test $z in add-Funktion 10\\ | ||
| + | Test $z in Main 10\\ | ||
| + | Test $b in plus-Function 101\\ | ||
| + | $a -> 21 $b -> 20 | ||
kurs/php9.9.txt · Last modified: 2014/09/10 21:22 (external edit)
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