[PHP_Day 6]_基本語法part6_迴圈for_foreach

for loop 跟 foreach寫法

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<?php $arr = ["張三","李四","王五"]; #$count = count($arr); #echo $count."<br/>"; echo "=======while loop======<br/>"; $idx = 0; while($idx < count($arr)){ echo "名字:[".$idx."]".$arr[$idx]."<br/>"; $idx++; } echo "=======for loop======<br/>"; for($idx2 = 0; $idx2 < count($arr) ; $idx2++){ echo "名字:[".$idx2."]".$arr[$idx2]."<br/>"; } echo "=======for v.s. foreach ======<br/>"; echo "=======for======<br/>"; $Students = [ [ "name" => "小明", "數學成績" => 80 ], [ "name" => "小菲", "數學成績" => 87 ], [ "name" => "小李", "數學成績" => 93 ], ]; for($idx3 = 0; $idx3 < count($Students) ; $idx3++){ $student = $Students[$idx3]; echo "姓名:".$student["name"]."<br/>"; echo "數學成績:".$student["數學成績"]."<br/>"; } echo "=======foreach======<br/>"; foreach($Students as $student){ echo "姓名:".$student["name"]."<br/>"; echo "數學成績:".$student["數學成績"]."<br/>"; } ?>