How to replace web page text in php

With the continuous development of Internet technology, web page production has become an increasingly common skill. For developers who know PHP language, PHP language is one of the best choices for making web pages. This article will introduce how to use php to replace text in web pages.

1. Open the file

To use php to replace text in a web page, you first need to open the web page file that needs to be edited. Files can be opened using the file_get_contents() function in PHP. The code is as follows:

$filename = "test.html";
$handle = fopen($filename, "r");
$contents = fread($handle, filesize($filename) );
fclose($handle);

2. Replace text

After opening the web page file, you can perform the replacement operation. Here we demonstrate by replacing "Hello World" in the web page with "Hello PHP".

Use the str_replace() function in php to perform text replacement. The code is as follows:

$new_contents = str_replace("Hello World", "Hello PHP", $contents);

3. Save the file

After the replacement is completed, you need Write the replaced content back to the file. Use the file_put_contents() function in php to write the replaced content back to the web page file. The code is as follows:

file_put_contents($filename, $new_contents);

After completing the above three steps, you can use php to replace the text in the web page. The complete code is as follows:

$filename = "test.html";
$handle = fopen($filename, "r");
$contents = fread($handle, filesize($ filename));
fclose($handle);

$new_contents = str_replace("Hello World", "Hello PHP", $contents);

file_put_contents($filename, $ new_contents);

Summary

Using PHP to replace text in web pages can improve work efficiency and code reusability. However, it should be noted that before replacing text, you need to open the web page file first, and write the replaced content back to the file after completing the replacement. I hope this article will be helpful to PHP developers.

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