What is the difference between reading a file with file() in PHP and replacing variables within the file content?

When reading a file with file() in PHP, the content of the file is returned as an array of lines. If you want to replace variables within the file content, you need to loop through each line of the file, replace the variables using PHP string manipulation functions, and then output the modified content. 

// Read the file into an array of lines
$fileLines = file('example.txt');

// Loop through each line and replace variables
foreach ($fileLines as $line) {
    // Replace variables using str_replace or other string manipulation functions
    $modifiedLine = str_replace('{variable}', $variableValue, $line);
    
    // Output the modified line
    echo $modifiedLine;
}

Keywords

file() reading variables content replacing

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