我必须检查来自fetch数组的结果，我使用else if或if来获取备注。但我不知道如何在echo中使用它，当我运行此代码时，所有的备注语句都以与代码中所写的相同的形式出现。
在这里我必须检查来自fetch数组的结果，所以对于这个我正在使用if if或者如果得到备注..但我不知道如何在echo中使用它。当我运行此代码时，所有备注语句都以与代码
中所写的相同的形式出现代码：
<?php
$answer = '';
include('config.php');
if(isset($_GET["results"]))
$answer = $_GET["results"];
$id = $_GET["idk"];
switch ($answer)
{
case 'Nursery':
$qqqs = mysql_query("select * from result where u_id='$id' AND sc='Nursery' ");
$rows=mysql_fetch_assoc($qqqs);
$a=$rows['u_id'];
$b=$rows['name'];
$c=$rows['fname'];
$d=$rows['reg'];
$e=$rows['sc'];
$f=$rows['ss'];
$g=$rows['se'];
$h=$rows['e1'];
$i=$rows['u1'];
$j=$rows['m1'];
$k=$rows['s1'];
$l=$rows['ss1'];
$m=$rows['i1'];
$n=$rows['e2'];
$o=$rows['u2'];
$p=$rows['e3'];
$pp=$rows['u3'];
$pic=$rows['picture'];
$total=$h+$i+$j+$k+$l+$m+$n+$o+$p;
$totals=230;
$res = ( $totals / $total) * 100;
// 0 digit after the decimal point
$res = round($res); // 67
// 1 digit after the decimal point
$res = round($res, 1); // 66.7
// 2 digits after the decimal point
$res = round($res, 2); // 66.67
echo "<html>
<head>
</head>
<body>
<table align='center' border='4' bgcolor='white' width='500' class='table table-bordered'>
<tr>
<td bgcolor='orange' colspan='4'><h2 align='center'>Leads Grammar School</h2><p align='center'>Babar Road, Kirri Jamandan, Multan</p></td>
</tr>
<tr>
<td bgcolor='yellow' colspan='4'><h2 align='center'>Monthly Test Feb-March</h2></td>
</tr>
<tr>
<td colspan='2'><img src='images/$pic' width='100px' height='100px' align='right'></td>
</tr>
<tr>
<td align='right'>Student's Name</td>
<td colspan='3'>$b</td>
</tr>
<tr>
<td align='right'>Father's Name</td>
<td colspan='3'> $c</td>
</tr>
<tr>
<td align='right'>Registration</td>
<td colspan='3'>$d</td>
</tr>
<tr>
<td align='right'>Student Class</td>
<td colspan='3'>$e</td>
</tr>
<tr>
<td align='right'>Exams</td>
<td colspan='3'>$f</td>
</tr>
<tr bgcolor='gray'>
<th>Subject Name</th>
<th>Marks</th>
<th>Obtained Marks</th>
<th>Grades</th>
</tr>
<tr>
<tr><td>English(Writing)</td>
<td>50</td>
<td> $h</td>
</tr>
<tr>
<tr ><td>Urdu(Writing)</td>
<td>50</td>
<td>$i</td>
</tr>
<tr>
<tr ><td>Math(Writing)</td>
<td>50</td>
<td> $j</td>
</tr>
<tr><th align='center' colspan='3' bgcolor='orange'>General Knowledge</th></tr>
<tr>
<tr ><td>Science</td>
<td>10</td>
<td> $k</td>
</tr>
<tr>
<tr ><td>S.Studies</td>
<td>10</td>
<td>$l</td>
</tr>
<tr>
<tr ><td>Islamiat</td>
<td>10</td>
<td>$m</td>
</tr>
<tr><th align='center' colspan='3' bgcolor='orange'>Poems</th></tr>
<tr>
<tr ><td>English </td>
<td>15</td>
<td> $n</td>
</tr>
<tr>
<tr ><td>Urdu</td>
<td>15</td>
<td>$o</td>
</tr>
<tr><th align='center' colspan='3' bgcolor='orange'>Book Reading</th></tr>
<tr>
<tr><td>English </td>
<td>10</td>
<td>$p</td>
</tr>
<tr>
<tr >
<td>Urdu</td>
<td>10</td>
<td>$pp</td>
</tr>
<tr>
<td><h1>Total Marks</h1></td>
<td>230</td>
<td>$total</td>
<td>$res</td>
</tr>
<tr><td><h2>Remarks</h2></td>
<td colspan='3'>
if(91=<$res<=100)
{
echo 'Exceptional';
}
else if(81=<$res<=90)
{
echo 'Excellent';
}
else if(71=<$res<=80)
{
echo 'Very Good';
}
else if(61=<$res<=70)
{
echo 'Good';
}
else if(51=<$res<=60)
{
echo 'Fair';
}
else if(40=<$res<=50)
{
echo 'Pass';
}
else if(01=<$res<=39)
{
echo ' Needs Improvement';
}
else if($res==0)
{
echo ' Needs Improvement';
}
</td>
</tr>
";
break;
}
?>
答案 0 :(得分：1)
试试这个：
<?php
$answer = '';
include('config.php');
if(isset($_GET["results"]))
$answer = $_GET["results"];
$id = $_GET["idk"];
switch ($answer)
{
case 'Nursery':
$qqqs = mysql_query("select * from result where u_id='$id' AND sc='Nursery' ");
$rows=mysql_fetch_assoc($qqqs);
$a=$rows['u_id'];
$b=$rows['name'];
$c=$rows['fname'];
$d=$rows['reg'];
$e=$rows['sc'];
$f=$rows['ss'];
$g=$rows['se'];
$h=$rows['e1'];
$i=$rows['u1'];
$j=$rows['m1'];
$k=$rows['s1'];
$l=$rows['ss1'];
$m=$rows['i1'];
$n=$rows['e2'];
$o=$rows['u2'];
$p=$rows['e3'];
$pp=$rows['u3'];
$pic=$rows['picture'];
$total=$h+$i+$j+$k+$l+$m+$n+$o+$p;
$totals=230;
$res = ( $totals / $total) * 100;
// 0 digit after the decimal point
$res = round($res); // 67
// 1 digit after the decimal point
$res = round($res, 1); // 66.7
// 2 digits after the decimal point
$res = round($res, 2); // 66.67
$out = "<html>
<head>
</head>
<body>
<table align='center' border='4' bgcolor='white' width='500' class='table table-bordered'>
<tr>
<td bgcolor='orange' colspan='4'><h2 align='center'>Leads Grammar School</h2><p align='center'>Babar Road, Kirri Jamandan, Multan</p></td>
</tr>
<tr>
<td bgcolor='yellow' colspan='4'><h2 align='center'>Monthly Test Feb-March</h2></td>
</tr>
<tr>
<td colspan='2'><img src='images/$pic' width='100px' height='100px' align='right'></td>
</tr>
<tr>
<td align='right'>Student's Name</td>
<td colspan='3'>$b</td>
</tr>
<tr>
<td align='right'>Father's Name</td>
<td colspan='3'> $c</td>
</tr>
<tr>
<td align='right'>Registration</td>
<td colspan='3'>$d</td>
</tr>
<tr>
<td align='right'>Student Class</td>
<td colspan='3'>$e</td>
</tr>
<tr>
<td align='right'>Exams</td>
<td colspan='3'>$f</td>
</tr>
<tr bgcolor='gray'>
<th>Subject Name</th>
<th>Marks</th>
<th>Obtained Marks</th>
<th>Grades</th>
</tr>
<tr>
<tr><td>English(Writing)</td>
<td>50</td>
<td> $h</td>
</tr>
<tr>
<tr ><td>Urdu(Writing)</td>
<td>50</td>
<td>$i</td>
</tr>
<tr>
<tr ><td>Math(Writing)</td>
<td>50</td>
<td> $j</td>
</tr>
<tr><th align='center' colspan='3' bgcolor='orange'>General Knowledge</th></tr>
<tr>
<tr ><td>Science</td>
<td>10</td>
<td> $k</td>
</tr>
<tr>
<tr ><td>S.Studies</td>
<td>10</td>
<td>$l</td>
</tr>
<tr>
<tr ><td>Islamiat</td>
<td>10</td>
<td>$m</td>
</tr>
<tr><th align='center' colspan='3' bgcolor='orange'>Poems</th></tr>
<tr>
<tr ><td>English </td>
<td>15</td>
<td> $n</td>
</tr>
<tr>
<tr ><td>Urdu</td>
<td>15</td>
<td>$o</td>
</tr>
<tr><th align='center' colspan='3' bgcolor='orange'>Book Reading</th></tr>
<tr>
<tr><td>English </td>
<td>10</td>
<td>$p</td>
</tr>
<tr>
<tr >
<td>Urdu</td>
<td>10</td>
<td>$pp</td>
</tr>
<tr>
<td><h1>Total Marks</h1></td>
<td>230</td>
<td>$total</td>
<td>$res</td>
</tr>
<tr><td><h2>Remarks</h2></td>
<td colspan='3'>";
if(91=<$res<=100)
{
$out .= 'Exceptional';
}
else if(81=<$res<=90)
{
$out .= 'Excellent';
}
else if(71=<$res<=80)
{
$out .= 'Very Good';
}
else if(61=<$res<=70)
{
$out .= 'Good';
}
else if(51=<$res<=60)
{
$out .= 'Fair';
}
else if(40=<$res<=50)
{
$out .= 'Pass';
}
else if(01=<$res<=39)
{
$out .= ' Needs Improvement';
}
else if($res==0)
{
$out .= ' Needs Improvement';
}
$out .="</td></tr>";
echo $out;
break;
}
?>
答案 1 :(得分：0)
PHP不支持此语法：
if(01=<$res<=39)
相反，您必须这样做：
if(1 <= $res && $res <= 39)
另外，不要用0开始你的数字，否则它们会被解释为八进制数字（基数为8），这会产生一些奇怪的后果。
仔细检查后编辑
哦......另外你确实不能在echo中包含条件语句。您必须先在代码中构建整个字符串，然后然后回显它。
答案 2 :(得分：0)
只需结束你的第一个echo，然后使用你的if语句来回显剩余的表。
<?php
$answer = '';
include('config.php');
if(isset($_GET["results"]))
$answer = $_GET["results"];
$id = $_GET["idk"];
switch ($answer)
{
case 'Nursery':
$qqqs = mysql_query("select * from result where u_id='$id' AND sc='Nursery' ");
$rows=mysql_fetch_assoc($qqqs);
$a=$rows['u_id'];
$b=$rows['name'];
$c=$rows['fname'];
$d=$rows['reg'];
$e=$rows['sc'];
$f=$rows['ss'];
$g=$rows['se'];
$h=$rows['e1'];
$i=$rows['u1'];
$j=$rows['m1'];
$k=$rows['s1'];
$l=$rows['ss1'];
$m=$rows['i1'];
$n=$rows['e2'];
$o=$rows['u2'];
$p=$rows['e3'];
$pp=$rows['u3'];
$pic=$rows['picture'];
$total=$h+$i+$j+$k+$l+$m+$n+$o+$p;
$totals=230;
$res = ( $totals / $total) * 100;
// 0 digit after the decimal point
$res = round($res); // 67
// 1 digit after the decimal point
$res = round($res, 1); // 66.7
// 2 digits after the decimal point
$res = round($res, 2); // 66.67
echo "<html>
<head>
</head>
<body>
<table align='center' border='4' bgcolor='white' width='500' class='table table-bordered'>
<tr>
<td bgcolor='orange' colspan='4'><h2 align='center'>Leads Grammar School</h2><p align='center'>Babar Road, Kirri Jamandan, Multan</p></td>
</tr>
<tr>
<td bgcolor='yellow' colspan='4'><h2 align='center'>Monthly Test Feb-March</h2></td>
</tr>
<tr>
<td colspan='2'><img src='images/$pic' width='100px' height='100px' align='right'></td>
</tr>
<tr>
<td align='right'>Student's Name</td>
<td colspan='3'>$b</td>
</tr>
<tr>
<td align='right'>Father's Name</td>
<td colspan='3'> $c</td>
</tr>
<tr>
<td align='right'>Registration</td>
<td colspan='3'>$d</td>
</tr>
<tr>
<td align='right'>Student Class</td>
<td colspan='3'>$e</td>
</tr>
<tr>
<td align='right'>Exams</td>
<td colspan='3'>$f</td>
</tr>
<tr bgcolor='gray'>
<th>Subject Name</th>
<th>Marks</th>
<th>Obtained Marks</th>
<th>Grades</th>
</tr>
<tr>
<tr><td>English(Writing)</td>
<td>50</td>
<td> $h</td>
</tr>
<tr>
<tr ><td>Urdu(Writing)</td>
<td>50</td>
<td>$i</td>
</tr>
<tr>
<tr ><td>Math(Writing)</td>
<td>50</td>
<td> $j</td>
</tr>
<tr><th align='center' colspan='3' bgcolor='orange'>General Knowledge</th></tr>
<tr>
<tr ><td>Science</td>
<td>10</td>
<td> $k</td>
</tr>
<tr>
<tr ><td>S.Studies</td>
<td>10</td>
<td>$l</td>
</tr>
<tr>
<tr ><td>Islamiat</td>
<td>10</td>
<td>$m</td>
</tr>
<tr><th align='center' colspan='3' bgcolor='orange'>Poems</th></tr>
<tr>
<tr ><td>English </td>
<td>15</td>
<td> $n</td>
</tr>
<tr>
<tr ><td>Urdu</td>
<td>15</td>
<td>$o</td>
</tr>
<tr><th align='center' colspan='3' bgcolor='orange'>Book Reading</th></tr>
<tr>
<tr><td>English </td>
<td>10</td>
<td>$p</td>
</tr>
<tr>
<tr >
<td>Urdu</td>
<td>10</td>
<td>$pp</td>
</tr>
<tr>
<td><h1>Total Marks</h1></td>
<td>230</td>
<td>$total</td>
<td>$res</td>
</tr>
<tr><td><h2>Remarks</h2></td>
<td colspan='3'>";
if(91=<$res<=100)
{
echo 'Exceptional';
}
elseif(81=<$res<=90)
{
echo 'Excellent';
}
else if(71=<$res<=80)
{
echo 'Very Good';
}
elseif(61=<$res<=70)
{
echo 'Good';
}
elseif(51=<$res<=60)
{
echo 'Fair';
}
elseif(40=<$res<=50)
{
echo 'Pass';
}
else if(01=<$res<=39)
{
echo ' Needs Improvement';
}
elseif($res==0)
{
echo ' Needs Improvement';
}
echo "</td>";
echo "</tr>";
break;
}
?>
答案 3 :(得分：0)
您可以在echo：
中使用三元运算符echo "start of string....".(bool_condition1 ? "condition is true" : "condition is false").".... more string";
答案 4 :(得分：0)
是的，您可以通过连接：
在echo中使用if / else条件$x = 10;
echo "X is " . ($x==10? "equal" : "not equal") . " to 10";
我还建议您创建一个返回评估分数的字符串的函数。 尝试将尽可能少的逻辑混合到演示文稿中。
答案 5 :(得分：0)
if内不能有echo声明。你可以做的是将所有if移到回声之外，并将结果存储在变量中。例如：
if(91 <= $res && $res <= 100) // Note how the condition *should* be written.
{
$remark = 'Exceptional';
}
else if(...
然后在表输出中使用该变量：
<tr><td><h2>Remarks</h2></td>
<td colspan='3'>$remark
答案 6 :(得分：0)
您还可以将三元运算符与自定义函数结合使用：
echo "fixed part".(inbetween($res,91,100)?'Exceptional':(inbetween($res,81,90)?'Excellent':'SOMETHING ELSE'));
function inbetween($int,$min,$max)
{
return ($int>=$min && $int<=$max);
}
这个三元运算符的语法可以在以下示例中看到：
echo "This is the result: " . ( $testiftrue ? 'TRUE' : 'FALSE' );
这将测试条件$ testiftrue，然后显示'TRUE'或'FALSE'