Extract Text from a string in PHP

Question

I have a string which contains :

navigation pane or double clicking folders in the details pane.

Navigating the folder structure
-------------------------------
symbol will expand or collapse folders in the navigation pane

I want to extract text only "Navigating the folder structure"

I have tried with preg_match_all but unable to handle starting point which is a new line.

I also tried with strpos but unable to do with new line as starting point.

Did you try `strpos`? http://stackoverflow.com/questions/4366730/how-to-check-if-a-string-contains-a-specific-word-in-php — Dan, Dec 19 '16 at 05:55
so what's the condition do you judge which string should be extract? the following "`------------------`"? — Fu Xu, Dec 19 '16 at 06:05
It can be started from a new line and should be ending at --------, so as per question's string. it will be Navigating the folder structure. But I need to do this dynamic so what ever the text it contains that should be extracted. — Naveed Ramzan, Dec 19 '16 at 06:06

Dan · Accepted Answer · 2016-12-19T06:10:37.933

1

Use a combination of strpos to find the line breaks, and substr to extract the text between the first and second line break. This text includes the dashes (-) so I included a str_replace to remove them.

$string = 'navigation pane or double clicking folders in the details pane.

    Navigating the folder structure
    -------------------------------
    symbol will expand or collapse folders in the navigation pane';

$position1 = strpos($string, "\n");
$position2 = strpos($string, "\n",$position1);

$extracted = str_replace("-","",substr($string, $position1, $position2));

echo $extracted;

This will print the desired text

edited Dec 19 '16 at 06:10

answered Dec 19 '16 at 06:00

Dan

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Well the text "Navigating the folder structure" is not a constant it can be anything. – Naveed Ramzan Dec 19 '16 at 06:01
@NaveedRamzan ok i updated it, similar logic as before but a bit different – Dan Dec 19 '16 at 06:11
Well, I think I missed some details. I have a file in which I have multiple text of above pattern so I want all that pattern based text should be extracted. By the way, above code is not working. – Naveed Ramzan Dec 19 '16 at 06:13
@NaveedRamzan you should do a better job asking the question then. Also, I have a PHP server running on my machine and I tested this answer and the other one and they both work. – Dan Dec 19 '16 at 06:15
Hmmm ok let me check again. – Naveed Ramzan Dec 19 '16 at 06:18
Ah, I got the clue. In fact you are assuming that string contains only these 3,4 lines. while I have a file having 3000 lines. – Naveed Ramzan Dec 19 '16 at 06:20
I did it with small fix. – Naveed Ramzan Dec 19 '16 at 06:22

jitendrapurohit · Answer 2 · 2016-12-19T06:02:40.180

0

Use explode -

$new =  explode("\n", $str);
var_dump($new[2]);

edited Dec 19 '16 at 06:02

answered Dec 19 '16 at 06:01

jitendrapurohit

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Nopes. not working – Naveed Ramzan Dec 19 '16 at 06:02
works for me with the above string . – jitendrapurohit Dec 19 '16 at 06:06
1

@jitendrapurohit worked for me – Dan Dec 19 '16 at 06:15

Extract Text from a string in PHP

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