How to replace file content in php

php method to replace file content: first use the fopen() function to open the file, then use the fgets() function to read the file line by line, then use the str_replace() function to replace the file content, and finally use the fwrite() function Just write to the file.

Related function introduction:

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feof () function checks whether the end of file (EOF) has been reached. Returns TRUE if an error occurs or the file pointer reaches the end of file (EOF), otherwise it returns FALSE.

fgets() function returns a line from an open file. The fgets() function will stop returning a new line when it reaches the specified length (length - 1), encounters a newline character, or reaches the end of file (EOF), whichever comes first. The function returns FALSE on failure.

str_replace() function replaces some characters in a string (case sensitive).

The file content before replacement is as shown below:

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Code implementation:

#The replaced file content is as shown below:

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