i. For Loop
ករណី For Loopយើងប្រើវា នៅពេលដែលយើងដឹងច្បាស់ថា កូដរបស់យើងនេះ វានិងត្រូវដំណើរការចំនួនប៉ុន្មានដង។
Syntax:
For (init counter; test counter; increament counter)
{
កូដដែលនិងត្រូវដំណើរការ
N
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1
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Code
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<form method="post" target="_self">
Summary:<input type="text" name="txts" value="<?php echo $_POST["txts"];?>" /><br />
pow by:<input type="text" name="txtp" value="<?php echo $_POST["txtp"];?>" />
<input type="submit" name="btnshow" value="Show" />
</form>
<?php
$sum=empty($_POST["txts"])?"":$_POST["txts"];
$pow=empty($_POST["txtp"])?"":$_POST["txtp"];
$loop=1;
$total="";
for($loop=1;$loop<=$sum;$loop++){
if($loop==$sum)
echo "$loop<sup>$pow</sup>=";
else
echo "$loop<sup>$pow</sup>"."+";
$total=$total+pow($loop,$pow);
}
echo $total;
?>
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Result
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2
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Code
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<form method="get" target="_self">
Number of Rows:<input type="text" name="rows" value=<?php echo empty($_GET["rows"])?"":$_GET["rows"];?>><br />
Number of Cols:<input type="text" name="cols" value=<?php echo empty($_GET["cols"])?"":$_GET["cols"];?>>
<input type="submit" name="btnshow" value="show" />
</form>
<table border="1">
<?php
$row=empty($_GET["rows"])?"":$_GET["rows"];
$col=empty($_GET["cols"])?"":$_GET["cols"];
$index="";
for($r=1;$r<=$row;$r++){
echo "<tr>";
for($c=1;$c<=$col;$c++){
$index++;
echo "<td>$index</td>";
}
}?></table>
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Result
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