PHP for each line in TXT, increase value of variable?

Question

I have the following code with reads a TXT file, pulls out unneeded info from each line, then stores the edited lines in a new TXT file.

<?php
$file_handle = fopen("old.txt", "rb");
ob_start();

while (!feof($file_handle) ) {

$line_of_text = fgets($file_handle);
$parts = explode('\n', $line_of_text);

foreach ($parts as $str) {
 $str_parts = explode('_', $str); // Split string by _ into an array
 array_pop($str_parts); // Remove last element
 array_shift($str_parts); // Remove first element
 echo implode('_', $str_parts)."\n"; // Put it back together    (and echo newline)
}
}

$new_content = ob_get_clean();
file_put_contents("new.txt", $new_content);

fclose($file_handle);
?>

I now want to insert $hr #min and $sec variables that will increase by 1 second every time a new line is saved. Let's say my lines read like this (old code):

958588
978567
986766

I want my new code to look like this:

125959958588
130000978567
130001986766

As you can see, the hour is in 24hr format (00 - 23), followed by minutes (00 - 59), and seconds (00 - 59) with the extracted txt at the end.

I've laid down the variable framework but I don't know how to get the vriables to increment properly. Can someone help?

<?php
$file_handle = fopen("old.txt", "rb");
$hr = 00;
$min = 00;
$sec = 00;
ob_start();

while (!feof($file_handle) ) {

$line_of_text = fgets($file_handle);
$parts = explode('\n', $line_of_text);

foreach ($parts as $str) {
 $str_parts = explode('_', $str); // Split string by _ into an array
 array_pop($str_parts); // Remove last element
 array_shift($str_parts); // Remove first element
 echo $hr.$min.$sec.implode('_', $str_parts)."\n"; // Put it back together  (and echo newline)
}
}

$new_content = ob_get_clean();
file_put_contents("new.txt", $new_content);

fclose($file_handle);
?>

@elxordi The time it starts at is to be determined by the variables set at the beginning of the code. — Sweepster, Apr 12 '12 at 19:53
Out of curiosity, why are you incrementing the time manually, rather than checking the actual time elapsed? I would expect your writes to be faster than (or slower than) exactly one per second, so the "timestamps" will not actually correspond to reality. — horatio, Apr 12 '12 at 20:34
It is just an example for a script I'm writing in which each line in a TXT file will be printed at a given time in the future (not necessarily by the second), that time being determined by the loop. Now that I now how to do it, I can increment my time by any amount of seconds I need — Sweepster, Apr 12 '12 at 21:12

elxordi · Accepted Answer · 2012-04-12T22:27:18.337

I would go much easier:

<?php
$contents = file('old.txt');
$time = strtotime('2012-01-01 00:00:00'); // Replace the time with the start time, the date doesn't matter
ob_start();

foreach ($contents as $line) {
    $str_parts = explode('_', $line); // Split string by _ into an array
    array_pop($str_parts); // Remove last element
    array_shift($str_parts); // Remove first element

    echo date('His', $time) . implode('_', $str_parts) . "\n"; // Put it back together  (and echo newline)

    $time += 1;
}

$new_content = ob_get_clean();
file_put_contents("new.txt", $new_content);

score 0 · Answer 2 · answered Apr 12 '12 at 19:48

0

I think you're looking for something like this in the inner loop:

$sec++;
if (($sec==60) { 
    $min++; 
    $sec=0 
    if (($min==60) { 
        $hr++; 
        $min=0; 
        if (($hr==25) { $hr=0; }
    }
}

answered Apr 12 '12 at 19:48

Leven

530
3
10

use printf or sprintf, like so: printf("%2d%2d%2d",$sec,$min,$hr); – Leven Apr 12 '12 at 19:56

score 0 · Answer 3 · answered Apr 12 '12 at 19:55

The format you have is of a date in the UNIX domain, for example the first date:

gmdate('His', 0);    # 000000
gmdate('His', 60);   # 000100
gmdate('His', 3600); # 010000

So you can just pass in the number of seconds and the gmdate function will format it for you.

PHP for each line in TXT, increase value of variable?

3 Answers3