How can existing carriage returns be replaced with line feeds in a PHP script for heredoc syntax?

To replace existing carriage returns with line feeds in a PHP script using heredoc syntax, you can use the `str_replace` function to replace `\r\n` with just `\n`. This will ensure that the line breaks are consistent across different platforms. Here is a code snippet that demonstrates how to achieve this: 

```php
<?php

// Original heredoc string with carriage returns
$originalString = <<<EOD
This is a test string with
carriage returns.\r
This is another line with
carriage returns.\r
EOD;

// Replace carriage returns with line feeds
$fixedString = str_replace("\r\n", "\n", $originalString);

echo $fixedString;
```

In this code snippet, the `str_replace` function is used to replace all occurrences of `\r\n` with `\n` in the heredoc string `$originalString`. The resulting string with consistent line feeds is then echoed out.

Keywords

PHP carriage returns line feeds heredoc syntax string manipulation

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