vb.org Archive - PHP: how to find a line feed in a text

vb.org Archive (https://vborg.vbsupport.ru/index.php)

- vB3 Programming Discussions (https://vborg.vbsupport.ru/forumdisplay.php?f=15)

- - PHP: how to find a line feed in a text (https://vborg.vbsupport.ru/showthread.php?t=108628)

Arjan

02-22-2006 02:59 PM

PHP: how to find a line feed in a text

I have a text in $mytext

Now I want to cut that text after the 5th line.
Doing so by estimating that every line is, say 100 chars, doesn't allways work.

Like in this case where every line has a line feed:
Line 1
Line 2
Line 3
Line 4
Line 5
Line 6
Line 7

How can I detect (and count) the line feeds in this text and determine which one is the 5th, so I know where to cut my text?

Code Monkey

02-23-2006 01:27 AM

PHP Code:


		
			
$mytext = <<<HDOC
Line 1
Line 2
Line 3
Line 4
Line 5
Line 6
Line 7
HDOC;
$temp_array = explode("\n", $mytext);

Eplode the page into an array using the newlines.

Then of course, line five is

PHP Code:


		
			
echo $temp_array[4];

You can also loop through it and delete lines before or after line five. You didn't specify.

PHP Code:


		
			
$line_count = count($temp_array);
for($i = 0; $i < $line_count; $i++)
{
    if($i == 4)
    {
        echo $temp_array[$i];
    }
}

PHP Code:


		
			
$line_count = count($temp_array);
$new_text = '';
for($i = 5; $i < $line_count; $i++)
{
    $new_text .= $temp_array[$i]."\n";
}
echo $new_text;

PHP Code:


		
			
$line_count = count($temp_array);
$new_text = '';
for($i = 0; $i < 5; $i++)
{
    $new_text .= $temp_array[$i]."\n";
}
echo $new_text;

Marco van Herwaarden

02-23-2006 08:17 AM

Tip: also have a look at array_slice()

Arjan

02-23-2006 01:21 PM

Thanks, that should help me out.

All times are GMT. The time now is 02:17 AM.

X vBulletin 3.8.12 by vBS Debug Information
Page Generation 0.02066 seconds Memory Usage 1,721KB Queries Executed 10 (?)
More Information
Template Usage: (1)ad_footer_end (1)ad_footer_start (1)ad_header_end (1)ad_header_logo (1)ad_navbar_below (5)bbcode_php_printable (1)footer (1)gobutton (1)header (1)headinclude (6)option (1)post_thanks_navbar_search (1)printthread (4)printthreadbit (1)spacer_close (1)spacer_open Phrase Groups Available: global postbit showthread	Included Files: ./printthread.php ./global.php ./includes/init.php ./includes/class_core.php ./includes/config.php ./includes/functions.php ./includes/class_hook.php ./includes/modsystem_functions.php ./includes/class_bbcode_alt.php ./includes/class_bbcode.php ./includes/functions_bigthree.php Hooks Called: init_startup init_startup_session_setup_start init_startup_session_setup_complete cache_permissions fetch_threadinfo_query fetch_threadinfo fetch_foruminfo style_fetch cache_templates global_start parse_templates global_setup_complete printthread_start bbcode_fetch_tags bbcode_create bbcode_parse_start bbcode_parse_complete_precache bbcode_parse_complete printthread_post printthread_complete
Messages: