Start array key at 1

How can I change the following snippet to have the array key start at
1 and not 0?

$timetable = explode(',', $row['timetable']);

It is taken from the following code...first time around the loop
$timetable["$eachperiod"] = $timetable[1] which puts me out of sync
with the number of fields I am creating ie. I lose $timetable[0].

// Weekdays
for ($weekdays=0;$weekdays <=4;$weekdays++) {
echo "\n";
$day = array('Mon', 'Tue', 'Wed','Thu','Fri');
echo "\t".$day[$weekdays]."\n";

// Periods
for ($periods=1;$periods <=$num_periods;$periods++) {
$eachperiod = $weekdays*$num_periods+$periods;

// Fill the table with periods
$fields = $timetable["$eachperiod"];

Cheers,

Chris

Re: Start array key at 1

"Chris" wrote in message
news:1193691642.582876.300860@22g2000hsm.googlegroups.com...
> How can I change the following snippet to have the array key start at
> 1 and not 0?
>
> $timetable = explode(',', $row['timetable']);
>
> It is taken from the following code...first time around the loop
> $timetable["$eachperiod"] = $timetable[1] which puts me out of sync
> with the number of fields I am creating ie. I lose $timetable[0].
>
> // Weekdays
> for ($weekdays=0;$weekdays <=4;$weekdays++) {
> echo "\n";
> $day = array('Mon', 'Tue', 'Wed','Thu','Fri');
> echo "\t".$day[$weekdays]."\n";
>
> // Periods
> for ($periods=1;$periods <=$num_periods;$periods++) {
> $eachperiod = $weekdays*$num_periods+$periods;
>
> // Fill the table with periods
> $fields = $timetable["$eachperiod"];
>
> Cheers,
>
> Chris

What is your problem? Except for ancient languages like Fortran, arrays
start at 0. Simply rewrite the loop to be:

for ($periods=0;$periods <$num_periods;$periods++) {

Shelly

Re: Start array key at 1

Shelly wrote:
> "Chris" wrote in message
> news:1193691642.582876.300860@22g2000hsm.googlegroups.com...
>> How can I change the following snippet to have the array key start at
>> 1 and not 0?
>>
>> $timetable = explode(',', $row['timetable']);
>>
>> It is taken from the following code...first time around the loop
>> $timetable["$eachperiod"] = $timetable[1] which puts me out of sync
>> with the number of fields I am creating ie. I lose $timetable[0].
>>
>> // Weekdays
>> for ($weekdays=0;$weekdays <=4;$weekdays++) {
>> echo "\n";
>> $day = array('Mon', 'Tue', 'Wed','Thu','Fri');
>> echo "\t".$day[$weekdays]."\n";
>>
>> // Periods
>> for ($periods=1;$periods <=$num_periods;$periods++) {
>> $eachperiod = $weekdays*$num_periods+$periods;
>>
>> // Fill the table with periods
>> $fields = $timetable["$eachperiod"];
>>
>> Cheers,
>>
>> Chris
>
> What is your problem? Except for ancient languages like Fortran, arrays
> start at 0. Simply rewrite the loop to be:
>
> for ($periods=0;$periods <$num_periods;$periods++) {
>
> Shelly
>
>

Also you don't need the double quotes around $eachperiod, i.e.
$fields=$timetable[$eachperiod];

Robin

Re: Start array key at 1

Chris schrieb:
> How can I change the following snippet to have the array key start at
> 1 and not 0?

You could unshift the array and then delete the new item immediately,
but this ugly and makes no sense, since you can work with your array
without transformation.

array_unshift($periods);
unset($periods[0]);

[...]

> // Periods
> for ($periods=1;$periods <=$num_periods;$periods++) {
> $eachperiod = $weekdays*$num_periods+$periods;

for($periods = 0; $periods < $num_periods; $periods++) {
$eachperiod = $weekdays * $num_periods + $periods + 1;
}