學習資訊部落

說明:

循環在指定條件為真時執行代碼

while語法如下:

 

x = 2; 

while(x <= 5) {
    echo "顯示 x /";
    x++;
} 
答案:顯示 2 /顯示 3 /顯示 4 /顯示 5 /

do...while語法如下:
x = 2; 

do {
    echo "顯示 x /";
    x++;
} while (x <= 5);
答案:顯示 2 /顯示 3 /顯示 4 /顯示 5 /

for語法如下:
for (x = 2; x <= 5; x++) {
    echo "顯示 x /";
} 
答案:顯示 2 /顯示 3 /顯示 4 /顯示 5 /

foreach語法如下:
colors = array("red", "green", "blue", "yellow"); 

foreach (colors as value) {
    echo "value /";
}
答案:red/green/blue/yellow