Extract certain data from a text file and create a table [closed] - php

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Hi I am very new on PHP programming i am just trying to learn a little bit more on how can i work with files.
I having a text file with some bunch of data like below.
image from the file
Policy Name: TU_TOPS_VM-Full_30D_00_2
Daily Windows:
Saturday 19:50:00 --> Sunday 06:00:00
Policy Name: TU_QW_VM-FULL_30D_18_01
Daily Windows:
Sunday 02:05:00 --> Sunday 09:00:00
Policy Name: TU_GPAS_FULL-VM_30D_18_01
Daily Windows:
Friday 22:00:00 --> Saturday 06:00:00
I would like to have an output similar to this in a table.
POlicy Day Time
TU_TOPS_VM-Full_30D_00_2 Saturday Saturday 19:50:00
TU_QW_VM-FULL_30D_18_01 Sunday 02:05:00
TU_GPAS_FULL-VM_30D_18_01 Friday 22:00:00
From my code i was able to obtain the Policy name and organize the data in a table column.
Output from code.
POlicy Day Time
TU_TOPS_VM-Full_30D_00_2
TU_QW_VM-FULL_30D_18_01
What i was able to do so far.
<?php
$lines= file('schedule');
$lines = preg_grep("/Policy Name:/", $lines);
echo'
<table>
<tr>
<td>POlicy</td>
<td>Day</td>
<td>Time</td>
</tr>';
foreach ($lines as $policy) {
$find="Policy Name:";
$replace="";
$po= (str_replace($find,$replace,$policy));
echo '
<tr>
<td>'.$po.'<br></td>
</tr>
</table>';
}
?>
How can i extract the day and time and organize it beside the policy
name?.

Answer 1

You're throwing away the other lines when you use preg_grep. Instead, loop over all the lines, checking which kind of line it is.
Also, </table> should not be inside the loop, it should only be at the end of the loop.
<?php
$lines= file('schedule', FILE_IGNORE_NEW_LINE);
echo'
<table>
<tr>
<td>POlicy</td>
<td>Day</td>
<td>Time</td>
</tr>';
foreach ($lines as $line) {
if (strstr($line, 'Policy Name:')) {
$policy = str_replace('Policy Name:', '', $line);
} elseif (preg_match('/(\w+)\s+(\d\d:\d\d:\d\d)\s+-->/', $line, $match)) {
$day = $match[1];
$time = $match[2];
echo "
<tr>
<td>$policy</td>
<td>$day</td>
<td>$time</td>
</tr>";
}
}
echo "\n</table>";
?>

Answer 2

#Barmar wrote a great answer. Here's a different tack, in that I want to control where my array breaks (i.e. not at each line, because I'm not sure where your line breaks are). Also, less specific matching gives you more support for variability in your input (which may not be an issue for you).
<?php
$string = file_get_contents('schedule') ; // read the file in as a string, not an array
$text_array = explode("Policy Name:", $string) ; // break the string into an array of strings at each "Policy Name:"
foreach($text_array as $entry){
$entry = preg_replace('/\s+/', ' ',$entry) ; // conflate whitespace into a single space for delimiting
$sub_entry_array = explode(' ', $entry) ; // split each substring into an array
$table_rows .= "<tr><td>$sub_entry_array[1]</td><td>$sub_entry_array[4]</td><td>$sub_entry_array[5]</td></tr>" ; // display the array values we want
}
echo "<table><tr><th>Policy</th><th>Day</th><th>Time</th></tr>$table_rows</table>" ;
?>