How to batch replace content in PHP files?

1 year ago
Jackson Davis
1 minute

In PHP, you can use the following method to replace content in multiple files:

  1. read the contents of a file
$file = 'path/to/file.txt';
$content = file_get_contents($file);
  1. replace characters within a string
$search = 'old_content';
$replace = 'new_content';
$newContent = str_replace($search, $replace, $content);
  1. Write the content of a file.
file_put_contents($file, $newContent);

Combining the above three steps will allow you to achieve the function of replacing file content in batches.

The complete example code is as follows:

$file = 'path/to/file.txt';
$search = 'old_content';
$replace = 'new_content';

$content = file_get_contents($file);
$newContent = str_replace($search, $replace, $content);
file_put_contents($file, $newContent);

Please note that this piece of code reads the entire content of the target file into memory for replacement, which may cause performance issues if the file is large. If you need to handle large files, consider using a method to read and write line by line.

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