How to replace the enter key in php

In PHP program development, sometimes text content needs to be processed, including replacing the Enter key. Below we will briefly introduce how to replace the Enter key in PHP.

The ASCII code of the Enter key is 13, and the ASCII code of the Line Feed key is 10. Sometimes we need to replace the Enter key with a space or other symbols in order to pass the text content to other programs for processing. Below we will illustrate how to perform the replacement by implementing a simple example.

First, we need to read the text content first:

$content = file_get_contents('example.txt');

The above code uses the file_get_contents function to read the text content in the example.txt file and save it using $content.

Next, we need to replace the newline keys in the text content with spaces:

$content = str_replace("\r\n", " ", $content);

In the above code, the PHP built-in function str_replace is used to implement the string replacement operation. Among them, "\r\n" represents the line feed key (the Enter key and the line feed key appear at the same time), and " " represents the character to be replaced with the line feed key. The replacement characters can be modified according to specific needs.

Finally, we can write the replaced text content into a new file:

file_put_contents('new_text.txt', $content);

In the above code, the file_put_contents function is used to write the text content saved in the $content variable to In the new file new_text.txt.

So far, we have successfully replaced the Enter key in the text content. Of course, for more complex replacement operations, we can adjust it according to the actual situation.

Summary

This article briefly introduces how to replace the Enter key in PHP. Through a simple example, we can see the powerful function of PHP's built-in function str_replace, which can help us quickly implement string replacement operations. In actual development, we can make adjustments according to specific needs to better meet business needs.

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