Php read lines string

Reading a String Line by Line in PHP

To reindex the returned array, instead of returning the first result and if you wish to avoid it, you can use Solution 2 which involves constructing an array of valid outcomes. Another option is Solution 3, which suggests not returning immediately when a particular string is found. Finally, Solution 1 involves using a different approach that maintains the original keys of the returned array.

PHP while loop to read multiline text from string

$eachLine = explode(PHP_EOL, $multilinestring); // best practice is to explode using EOL (End Of Line). foreach ($eachLine as $line)

Why bother with a while loop when you can use a foreach loop to accomplish the task?

foreach (explode("\n", $multilinestring) as $line)

To read a text file, it’s recommended to use either fgets() or read the file to an array completely using file() and then utilize explode() . Check out the following code snippet for reference.

$arr = file("somefile.txt"); // read the file to an array for ($i=0;$i

Php get String of .txt file by line, You may use SplFileObject , see example below: $file = new SplFileObject(‘example.txt’); $file->seek(1); echo $file->current();.

PHP get file line by line and compare to string

I have identified a couple of possible concerns.

It’s possible that there is a typo in your output variable since $boolean = False; was executed before $liste = True; .

The second problem is related to thelist.txt , which is not an absolute path. As a result, it’s possible that the file resource wasn’t loaded successfully. To avoid this issue, it’s strongly advised that you use absolute paths for file resources, such as /full/path/to/file or __DIR__ . ‘/path/to/file’ .

Concerns arise due to the inclusion of and at the end of each line in fgets . These characters do not exist in the compared string variable. To avoid this discrepancy, one can utilize trim which eliminates superfluous line endings and white spaces, enabling a more accurate comparison with the string variable.

Example: https://3v4l.org/4VG4D

$username = "myname.mylastname"; $liste = false; $handle = fopen("thelist.txt", 'rb'); while (false !== ($line = fgets($handle))) < if (trim($line) === $username)< $liste = true; break; //stop at first match >> fclose($handle); var_dump($liste); //true 

Search into text file and get Line text if contain string php, You file has lines wich content. key [space] (type) [space] name. And you want to fine «name» by «key». So you can use preg-match-all()

How to extract string line by line from one text file to another text file

I fail to see how the absence of a space between fopen and the parenthesis is relevant.

If each line of your input file only contains a single phone number that begins with ‘+234’, you may utilize a regular expression to extract the desired portion for placement in the new file.

$this_crap_file = fopen($old_file_name, "r"); $the_new_writing = fopen($new_file_name, "a"); while ($line = fgets($this_crap_file)) < preg_match('/\+234(\d+)/', $line, $matches); $new_string = "Names\t" . $matches[1] . "\n"; fwrite($the_new_writing, $new_string); >fclose($the_new_writing); fclose($this_crap_file); 

PHP: Read Specific Line From File, $myFile = «4-24-11.txt»; $lines = file($myFile);//file in to an array echo $lines[1]; //line 2. file — Reads entire file into an array.

Get every line with string in PHP

Another way using preg_grep

$lines = file('alt.txt'); $results = preg_grep("/1992/", $lines); 

The returned array from preg_grep will maintain the original keys. To reindex the array, add the following code if desired.

$results = array_values($results); 

Instead of just returning the initial result, create an array consisting of all the legitimate outcomes and return it.

function getLineWithString($fileName, $str) < $results = array(); $lines = file($fileName); foreach ($lines as $lineNumber =>$line) < if (strpos($line, $str) !== false) < $results[] = $line; >> return $results; > 

Your current approach involves stopping the search as soon as a specific string is found. Instead, consider storing the line in an array and returning the entire array for a more effective solution. This way, your output would contain all the relevant information.

function getLineWithString($fileName, $str) < $lines = file($fileName); $returnLines = array(); foreach ($lines as $lineNumber =>$line) < if (strpos($line, $str) !== false) < $returnLines[] = $line; >> return count($returnLines) > 0 ? $returnLines : -1; > 

To ensure that -1 is still returned when nothing is added, I’ve incorporated a one-line if statement into the return statement.

Get every line with string in PHP, Another way using preg_grep $lines = file(‘alt.txt’); $results = preg_grep(«/1992/», $lines);. preg_grep will preserve the original keys in

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Php read a string by line php

Solution 2: The while loop should look something more like this: Because you’re calling fgets twice, you’re checking odd lines and writing out even lines. UPDATE The reason the following code will not work is because in order for to be recognized, it needs to be inside double quotes since double quotes parse data inside of them, where as single quotes takes it literally, IE To fix it, it would be:

String returned in reading file line by line

Each call to fgets() retrieves a new line from the file. Call it once per loop iteration, putting the returned line in a variable, and then check and use that variable.

The while loop should look something more like this:

Because you’re calling fgets twice, you’re checking odd lines and writing out even lines.

You could rewrite your code so that you reduce the places where errors can occur, the SplFileObject is handy to operate with textfiles and to go over each line.

A FilterIterator can be used to only return those lines that do not contain * or / .

getInnerIterator()->current(); return strlen($line) === strcspn($line, '*/'); > > $filteredLines = new LineFilter(new SplFileObject($inFile)); foreach($filteredLines as $line) < $outFile->fwrite($line); > ?> 

Read Text Files in PHP, Created: August-20, 2021 . Use the fgets() Function to Read Text Files Line by Line in PHP ; Use the file() Function to Read Text Files Line by Line in PHP ; Use the file_get_contents() and explode() Functions to Read File Line by Line in PHP ; This article will introduce methods to read text files line by line in PHP. Use the …

How to read entire line (string) using fscanf?

It’s old question, but for googlers:

To read a whole line with fscanf(), use «%[^\n]». In fscanf(), $[^characters] means to match any sequence of characters that isn’t in the set between the brackes (it’s similar to [^characters]* in a regular expression). So this matches any sequence of characters other than newline. See http://php.net/manual/en/function.sscanf.php#56076

I hope the following code snippet works,

sometimes fscanf will not read the entire line if the input string contains the character «n». So it is always better to use «%[^]» for reading the entire line in PHP through fscanf

String — PHP reading from file multiple lines, different, I am able to open the file and properly display it line by line, but I want to make a decision based on the first word. For example, if in the text file the line started with: Something1: This is a test. It would output that string but «Something1:» would be bold and a color different then. Something2: This is a …

Get each line from textarea

You will want to look into the nl2br() function along with the trim().

The nl2br() will insert
before the newline character ( \n ) and the trim() will remove any ending \n or whitespace characters.

$text = trim($_POST['textareaname']); // remove the last \n or whitespace character $text = nl2br($text); // insert 
before \n 

That should do what you want.

The reason the following code will not work is because in order for \n to be recognized, it needs to be inside double quotes since double quotes parse data inside of them, where as single quotes takes it literally, IE «\n»

But it is still better to use the builtin nl2br() function, PHP provides.

Sorry, I figured the first question was so you could add the linebreaks in, indeed this will change the answer quite a bit, as anytype of explode() will remove the line breaks, but here it is:

$text = trim($_POST['textareaname']); $textAr = explode("\n", $text); $textAr = array_filter($textAr, 'trim'); // remove any extra \r characters left behind foreach ($textAr as $line) < // processing here. >

If you do it this way, you will need to append the
onto the end of the line before the processing is done on your own, as the explode() function will remove the \n characters.

Added the array_filter() to trim() off any extra \r characters that may have been lingering.

You could use PHP constant:

$array = explode(PHP_EOL, $text); 

additional notes:
1. For me this is the easiest and the safest way because it is cross platform compatible (Windows/Linux etc.)
2. It is better to use PHP CONSTANT whenever you can for faster execution

Old tread. Well, someone may bump into this.

Please check out http://telamenta.com/techarticle/php-explode-newlines-and-you

$values = explode("\n", $value_string); 

$values = preg_split('/[\n\r]+/', $value_string); 

Php — Explode a string with line break, I am trying to break a string into an array using the explode function. I want it break the string using the line breaks found inside the string. I looked it up and I tried all the ways but I can’t get it to work.

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