Php 如何在echo中使用if语句
我必须检查fetch数组的结果，我正在使用Php 如何在echo中使用if语句,php,mysql,if-statement,Php,Mysql,If Statement,我必须检查fetch数组的结果，我正在使用else if或if获取备注。但我不知道如何在echo中使用它，当我运行这段代码时，所有的备注语句都以代码中编写的相同形式出现 在这里，我必须检查从fetch数组得到的结果，因此为此，我使用else-if或if来获取注释。但我不知道如何将其与In-echo一起使用。当我运行这段代码时，所有的备注语句都以代码中编写的相同形式出现 代码： <?php $answer = ''; include('config.php');
else ifif <?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;
}
?>
PHP不支持此语法：
if(01=<$res<=39)
if（01=只需结束第一次回显，然后使用if语句回显表的其余部分
<?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;
}
?>
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;
}
?>
您可以对echo中的条件使用三元运算符：
echo "start of string....".(bool_condition1 ? "condition is true" : "condition is false").".... more string";
是的，您可以通过连接以下内容在回显中设置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函数，返回评估分数的字符串。
尽可能少地在演示文稿中混用逻辑。您不能在echo
中包含if
语句。您可以做的是将所有if
移到echo之外，并将结果存储在一个变量中。例如：
if(91 <= $res && $res <= 100) // Note how the condition *should* be written.
{
$remark = 'Exceptional';
}
else if(...
if（91您也可以使用三元运算符，与自定义函数结合使用：
echo "fixed part".(inbetween($res,91,100)?'Exceptional':(inbetween($res,81,90)?'Excellent':'SOMETHING ELSE'));
function inbetween($int,$min,$max)
{
return ($int>=$min && $int<=$max);
}
这将测试条件$testiftrue，然后显示'TRUE'或'FALSE'您无法在回音中写入if else条件。感谢大家..您解决了我的问题，并向大家致以最良好的祝愿you@beginner如果我的回答对您有所帮助，如果您能将其标记为“已接受”，供其他人稍后查找，我将不胜感激。
<tr><td><h2>Remarks</h2></td>
<td colspan='3'>$remark
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);
}
echo "This is the result: " . ( $testiftrue ? 'TRUE' : 'FALSE' );