How can PHP be used to read specific lines and extract data from a text file, such as extracting values from line 8 at specific character positions?

To read specific lines and extract data from a text file in PHP, you can use the `file()` function to read the file into an array, then access the specific line you want using array indexing. To extract values from a specific line at certain character positions, you can use the `substr()` function to extract the desired substring. 

$file = file('data.txt'); // Read the file into an array
$line = $file[7]; // Get the 8th line (index 7)
$value = substr($line, 10, 5); // Extract a substring starting at position 10 with a length of 5 characters
echo $value; // Output the extracted value

Keywords

PHP file handling fopen fgets substr

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