Env: Slackware 8.1, Apache 1.3.27, PHP 4.3.0
Bugs: None found for these issues.
I am running to this same problem. The isset() function appears to have
problems with the empty text value. The empty() function sees the value
of $_POST['q1'] as expected.
So why is both isset() and empty() returning true on q1?
I included the is_null() to verify that the value is definitely not
null.
Submitting the empty form yields these results:
Value of q1 ==
Value of q1 is NOT NULL
Q1 is empty
q2 is empty
q3 is empty
q4 is empty
Values for q2, q3, and q4 all return as expected.
Source follows:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> PHP Test </TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT="">
</HEAD>
<BODY>
<FORM action="test.php" method="POST">
<span id="q1">Text: <INPUT name="q1" type="text" maxlength="128"
value=""></span><br>
<span id="q2">Radio:
<input name="qa2" type="radio" value="1">
<input name="qa2" type="radio" value="2">
<input name="qa2" type="radio" value="3">
<input name="qa2" type="radio" value="4">
</span><br>
<span id="q3">Checkbox: <input type="checkbox" name="qa3"
value="9"></span><br>
<input type="submit" value="Submit"> <input type="Reset"
name="Reset"><br>
</FORM>
</BODY>
</HTML>
PHP Source:
<?
if (isset($_POST['q1'])){
print "Value of q1 == ".$_POST['q1']."<br>";
}
if (is_null($_POST['q1'])){
print "Value of q1 is null<br>";
} else {
print "Value of q1 is NOT NULL<br>";
}
if (empty($_POST['q1'])){
print "Q1 is empty<br>";
}
if (isset($_POST['q2'])){
print "Value of q2 == ".$_POST['q2']."<br>";
}
if (empty($_POST['q2'])){
print "q2 is empty<br>";
}
if (isset($_POST['q3'])){
print "Value of q3 == ".$_POST['q3']."<br>";
}
if (empty($_POST['q3'])){
print "q3 is empty<br>";
}
if (isset($_POST['q4'])){
print "Value of q4 == ".$_POST['q4']."<br>";
}
if (empty($_POST['q4'])){
print "q4 is empty<br>";
}
?>
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