php表单复选框='$变量';
我似乎无法完成这件事。我从表中获取数据,如果列中的值=y,则必须选中复选框,如果列中的值=n,则不得选中复选框,所有复选框保持选中状态,即使只有第一行的列=yphp表单复选框='$变量';,php,forms,checkbox,Php,Forms,Checkbox,我似乎无法完成这件事。我从表中获取数据,如果列中的值=y,则必须选中复选框,如果列中的值=n,则不得选中复选框,所有复选框保持选中状态,即使只有第一行的列=y <?php session_start(); include 'datalogin.php'; $sel_course_id = 2; $sel_date_1 = '2012-05-21'; $sel_date_2 = '2012-05-22'; echo "<form ac
<?php
session_start();
include 'datalogin.php';
$sel_course_id = 2;
$sel_date_1 = '2012-05-21';
$sel_date_2 = '2012-05-22';
echo "<form action='' method='post'>";
echo "<strong>Completed the course</strong>";
$sql1 = "SELECT * FROM trn WHERE course_id = '$sel_course_id' AND date_1 = '$sel_date_1' and date_2 = '$sel_date_2'";
$res1 = mysql_query($sql1);
while ($row1 = mysql_fetch_assoc($res1)) {
$rowid1 = $row1['id'];
$uid1 = $row1['usr_id'];
$certificate_name1 = $row1['certificate_name'];
$course_completed1 = $row1['course_completed'];
$sql2 = "SELECT * FROM ex_usrs WHERE id = '$uid1'";
$res2 = mysql_query($sql2);
while ($row2 = mysql_fetch_assoc($res2)) {
$fn2 = $row2['firstname'];
$ln2 = $row2['lastname'];
}
$checked2 = "";
if ($course_completed1 == y) {
$checked2 = "checked";
}
if ($course_completed1 == n) {
$checked2 = "";
}
echo "<input name='question[$rowid1][]' type='checkbox' checked='$checked2' value='1' />$fn2 $ln2";
echo "</br>";
}
echo "</form>";
?>
对字符串使用引号:
if ($course_completed1 == "y") {
$checked2 = "checked";
}
if ($course_completed1 == "n") {
$checked2 = "";
}
checked='$checked2'
应该是普通的$checked2
,它是一个布尔属性
(除非您正在编写XHTML,在这种情况下,在您测试if($course\u completed 1==“y”){
之后,还应为其指定值'checked=“checked”
)
您的测试还应该检查字符串(“y”
)而不是常量(y
)。如前所述,您需要引用y
和n
来比较字符串值。但即使只选中了项=“
”,也会导致您的复选框被选中。请尝试这样做:
if ($course_completed1 == "y") {
$checked2 = "checked='checked'";
}
elseif ($course_completed1 == "n") {
$checked2 = "";
}
echo "<input name='question[$rowid1][]' type='checkbox' $checked2 value='1' />$fn2 $ln2";
if($course\u completed1==“y”){
$checked2=“checked='checked'”;
}
elseif($course_Completed 1==“n”){
$checked2=“”;
}
回声“$fn2$ln2”;