Is it possible to store multiple textbox values in array, i have N number of textboxes
是否可以在数组中存储多个文本框值,我有N个文本框
<input type="text" name="grade[]" id="grade" />
<input type="text" name="grade[]" id="grade" />
<input type="text" name="grade[]" id="grade" />
i tried this code to add all the text box value but it returns only the last text box value.
我尝试使用此代码添加所有文本框值,但它只返回最后一个文本框值。
$grade=$_POST['grade'];
for($i=1;$i<=3;$i++)
{
$per=$grade[$i]*$grade[$i];
echo $per;
}
3 个解决方案
#1
2
Besides of starting on 0, it should finish on 2 if you have 3 text boxes.
除了从0开始,如果你有3个文本框,它应该在2结束。
for($i=0;$i<=2;$i++)
{
$per=$grade[$i]*$grade[$i];
echo $per;
}
Or you could use the array length if you don't want to hardcode the number of iteractions. This should work:
或者,如果您不想对迭代次数进行硬编码,则可以使用数组长度。这应该工作:
for($i=0;$i<=count($grade)-1;$i++)
{
$per=$grade[$i]*$grade[$i];
echo $per;
}
EDIT
This should work too and it's slightly cleaner (avoiding the -1) and using the pow() function:
这也应该工作,它稍微清洁(避免-1)并使用pow()函数:
for($i=0;$i<count($grade);$i++)
{
echo pow($grade[$i], 2);
}
#2
2
Try this one...
试试这个......
<?php
foreach ($_GET['grade'] as $grade){
$per = $grade * $grade;
echo $per;
}
?>
#3
0
Try using this
试试这个
$per='';
$grade=$_POST['grade'];
for($i=0;$i<count($grade);$i++)
{
$per .=$grade[$i]*$grade[$i];
$per .='<<>>';
}
echo $per;
count($grade)
is used for n no. of textboxes. You need to concatenate the values of variable in order to get the values of all the textboxes.
count($ grade)用于n no。的文本框。您需要连接变量的值以获取所有文本框的值。
#1
2
Besides of starting on 0, it should finish on 2 if you have 3 text boxes.
除了从0开始,如果你有3个文本框,它应该在2结束。
for($i=0;$i<=2;$i++)
{
$per=$grade[$i]*$grade[$i];
echo $per;
}
Or you could use the array length if you don't want to hardcode the number of iteractions. This should work:
或者,如果您不想对迭代次数进行硬编码,则可以使用数组长度。这应该工作:
for($i=0;$i<=count($grade)-1;$i++)
{
$per=$grade[$i]*$grade[$i];
echo $per;
}
EDIT
This should work too and it's slightly cleaner (avoiding the -1) and using the pow() function:
这也应该工作,它稍微清洁(避免-1)并使用pow()函数:
for($i=0;$i<count($grade);$i++)
{
echo pow($grade[$i], 2);
}
#2
2
Try this one...
试试这个......
<?php
foreach ($_GET['grade'] as $grade){
$per = $grade * $grade;
echo $per;
}
?>
#3
0
Try using this
试试这个
$per='';
$grade=$_POST['grade'];
for($i=0;$i<count($grade);$i++)
{
$per .=$grade[$i]*$grade[$i];
$per .='<<>>';
}
echo $per;
count($grade)
is used for n no. of textboxes. You need to concatenate the values of variable in order to get the values of all the textboxes.
count($ grade)用于n no。的文本框。您需要连接变量的值以获取所有文本框的值。