Count lines in string

[blic]

Hi there,

I have a string $str, and this string has a text with multiple lines.

So let's say:

$st=

"hello

everybody"

So, if I echo that, I'll get:

echo $st ===> hello everybody.

If I use tag <pre>, I get:

hello

everybody

 

So, how can I count the lines (in this case it would be 2)?

 

In my problem I have a big string with several lines, and I want to extract a few lines, around a specific string. So I think if I can count the lines, I can do that..

Thanks!!

 

[wildteen88]

The \n escape character represents newlines. To get the number of lines you can do

$count = substr_count($string, "\n");

[blic]

Hey, that helped, thanks!

But I thought the solution would be different, so I'm still not sure how to find which line in my string contains a certain substring. I can find the position in terms of number of characters, but not in lines..

How can I find which line contains my string?

 

thanks!

[wildteen88]

An alternative way would be take each line within your string and add it into an array. You'd then iterate over the lines within the array searching for the string. When the string is found return the current line.

Example code

// the string to search for
$searchString = 'mystring';

// some example data to work with
$data = 'Line 1
Line 2 mystring
Line 3
Line 4';

// add each line into the array $lines
$lines = explode("\n", $data);

// iterate through the lines
foreach($lines as $key => $line)
{
    // check to see if the string is on the current line
    if(strpos($line, $searchString) !== FALSE)
    {
        // string has been found, tell the user on what line it is on
        echo "Found '$searchString' on Line " . ($key+1);
        break; // stop the loop
    }
}