Notice: Uninitialized string offset: 1
Ik krijg steeds de melding: Notice: Uninitialized string offset: 1 in C:\xampp\htdocs\status.php on line 77
Ik krijg met geen mogelijkheid de melding weg.
Hopelijk kunnen jullie mij helpen.
GrtZ Evert
Hier is het script.
<meta http-equiv="Refresh" content="10;URL=status.php">
Code (php)
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<?php
// uitlezen syteemfunctie
$File = "System.txt";
$fh = fopen($File, 'r');
$Dt = fgets($fh);
fclose($fh);
echo "<font color='white'>";
echo "<table border=\"0\" align=\"left\">";
echo "<tr><th>IO-nr</th>";
echo "<th> Status </th></tr>";
for ($counter = 0 ; $counter <= 15 ; $counter += 1)
{
// *****************************************op onderstaande blijft ie hangen *******************;
$Ps = $Data[$counter];
// **********************************************************************************************;
$c=$counter+1;
$File='poort' .$c. '.txt';
$fh = fopen($File, 'r');
$Data = fgets($fh);
fclose($fh);
if ( $Ps == 1 )
{
$onoff='<img src="../images/img0007.png" id="Image1" alt="" border="0" style="width:20px;height:20px">'."<br />";
}
else
{
$onoff='<img src="../images/img0008.png" id="Image1" alt="" border="0" style="width:20px;height:20px">'."<br />";
}
If ($Dt == 0)
{
$onoff='<img src="../images/img0009.png" id="Image1" alt="" border="0" style="width:20px;height:20px">'."<br />";
}
echo "<tr><td>";
echo chr(32);
echo $counter+1;
echo "</td><td>";
echo chr(32);
echo $onoff;
echo "</td></tr>";
}
echo "</table>";
?>
// uitlezen syteemfunctie
$File = "System.txt";
$fh = fopen($File, 'r');
$Dt = fgets($fh);
fclose($fh);
echo "<font color='white'>";
echo "<table border=\"0\" align=\"left\">";
echo "<tr><th>IO-nr</th>";
echo "<th> Status </th></tr>";
for ($counter = 0 ; $counter <= 15 ; $counter += 1)
{
// *****************************************op onderstaande blijft ie hangen *******************;
$Ps = $Data[$counter];
// **********************************************************************************************;
$c=$counter+1;
$File='poort' .$c. '.txt';
$fh = fopen($File, 'r');
$Data = fgets($fh);
fclose($fh);
if ( $Ps == 1 )
{
$onoff='<img src="../images/img0007.png" id="Image1" alt="" border="0" style="width:20px;height:20px">'."<br />";
}
else
{
$onoff='<img src="../images/img0008.png" id="Image1" alt="" border="0" style="width:20px;height:20px">'."<br />";
}
If ($Dt == 0)
{
$onoff='<img src="../images/img0009.png" id="Image1" alt="" border="0" style="width:20px;height:20px">'."<br />";
}
echo "<tr><td>";
echo chr(32);
echo $counter+1;
echo "</td><td>";
echo chr(32);
echo $onoff;
echo "</td></tr>";
}
echo "</table>";
?>
Gewijzigd op 11/09/2013 19:29:08 door Evert Kaa
Ik denk, maar dat is een wilde gok, dat het fout gaat bij regel 61...
En welke regel is dat?
Toevoeging op 11/09/2013 19:35:54:
$Data[1] bestaat blijkbaar niet.
Erwin H op 11/09/2013 20:08:13:
Heel $Data bestaat nog niet in de eerste aanroep van de for loop. Op regel 35 staat wel $Data = fgets($fh); maar in de eerste loop is hij daar nog niet geweest.
Scherp gezien.
Probleem opgelost lijkt mij.
Inderdaad,ik heb het aangepast en het werkt nu.
thanx
Code (php)
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<?php
// uitlezen syteemfunctie
$File = "System.txt";
$fh = fopen($File, 'r');
$Dt = fgets($fh);
fclose($fh);
echo "<font color='white'>";
echo "<table border=\"0\" align=\"left\">";
echo "<tr><th>IO-nr</th>";
echo "<th> Status </th></tr>";
for ($counter = 0 ; $counter <= 15 ; $counter += 1)
{
$c=$counter+1;
$File='poort' .$c. '.txt';
$fh = fopen($File, 'r');
$Data = fgets($fh);
fclose($fh);
if ( $Data == 1 )
{
$onoff='<img src="../images/img0007.png" id="Image1" alt="" border="0" style="width:20px;height:20px">'."<br />";
}
else
{
$onoff='<img src="../images/img0008.png" id="Image1" alt="" border="0" style="width:20px;height:20px">'."<br />";
}
If ($Dt == 0)
{
$onoff='<img src="../images/img0009.png" id="Image1" alt="" border="0" style="width:20px;height:20px">'."<br />";
}
echo "<tr><td>";
echo chr(32);
echo $counter+1;
echo "</td><td>";
echo chr(32);
echo $onoff;
echo "</td></tr>";
}
echo "</table>";
?>
// uitlezen syteemfunctie
$File = "System.txt";
$fh = fopen($File, 'r');
$Dt = fgets($fh);
fclose($fh);
echo "<font color='white'>";
echo "<table border=\"0\" align=\"left\">";
echo "<tr><th>IO-nr</th>";
echo "<th> Status </th></tr>";
for ($counter = 0 ; $counter <= 15 ; $counter += 1)
{
$c=$counter+1;
$File='poort' .$c. '.txt';
$fh = fopen($File, 'r');
$Data = fgets($fh);
fclose($fh);
if ( $Data == 1 )
{
$onoff='<img src="../images/img0007.png" id="Image1" alt="" border="0" style="width:20px;height:20px">'."<br />";
}
else
{
$onoff='<img src="../images/img0008.png" id="Image1" alt="" border="0" style="width:20px;height:20px">'."<br />";
}
If ($Dt == 0)
{
$onoff='<img src="../images/img0009.png" id="Image1" alt="" border="0" style="width:20px;height:20px">'."<br />";
}
echo "<tr><td>";
echo chr(32);
echo $counter+1;
echo "</td><td>";
echo chr(32);
echo $onoff;
echo "</td></tr>";
}
echo "</table>";
?>
</body>
</html>
Gewijzigd op 12/09/2013 07:32:54 door Evert Kaa