CODEWITHSUNDEEP
phparraysfile
Ade Muhamad Ramdani
Ade Muhamad Ramdani

Reputation: 13

how to create array inside array from text file in php

first, i have a text file

Samsung|us|new
iPhone|china|new

i want to convert the text file, and the result must be like this

[
    [
        'Samsung', 'us', 'new'
    ],
    [
        'iPhone', 'china', 'new'
    ]
]

i have already try this, but the code only return one array

code:

<?php
$a = file_get_contents("text.txt");
$b = explode('|', $a);

result:

[
    'Samsung','us','new','iPhone','china','new'
];

Upvotes: 1

Views: 154

Answers (3)

PKeidel
PKeidel

Reputation: 2589

This is because file_get_contents() reads the whole file including the line breaks. You have to first explode() on \n. After that explode() on |.

Or with array_map() in one line:

$a = file_get_contents("text.txt");
$b = array_map(fn($line) => explode('|', $line), explode("\n", $a));
                                                                // $a with \n
                                                 // this explode splits the lines
                            // this explodes at the | character

Example: https://3v4l.org/24qla

If you want to read some big files you can use something like this:

function getCsvData($file, $delimiter = '|') {
    if (($handle = fopen($file, "r")) !== FALSE) {
        while (($data = fgetcsv($handle, 1000, $delimiter)) !== FALSE) {
            yield $data;
        }
        fclose($handle);
    }
}

foreach(getCsvData('test.txt') as $row) {
  print_r($row);
}

Upvotes: 0

SaschaP
SaschaP

Reputation: 889

According to the hint from Jeto I would do the following:

at first read the file with function file() with the flag FILE_IGNORE_NEW_LINES. This reads the file line by line and creates an array. next step would be to iterate over each element and split by | character with explode().

This could be the resulting code:

$file = file('test.txt', FILE_IGNORE_NEW_LINES);
for($i = 0; $i < count($file); $i++)
{
    $file[$i] = explode('|', $file[$i]);
}

Upvotes: 1

Ren&#233; H&#246;hle
Ren&#233; H&#246;hle

Reputation: 27295

Don't use file_get_contents open the file and read the file line by line. Then split the line.

https://www.php.net/manual/en/function.fgets.php

Here are some example to do this. You can use fgets for this. With file_get_contents you get the whole file.

Another solution is to explode by \r\n or \n the characters for new line. Then you have the single lines and you can split them by your delimiter. But in this case you write the whole content in an array what can cause some memory problem.

explode("\n",$homepage)

Upvotes: 0

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