


How to implement file_put_contents appending and line wrapping in php?
The following editor will bring you an article on how to implement file_put_contentsappend and line break in PHP. The editor thinks it is quite good, so I will share it with you now and give it as a reference for everyone. Let’s follow the editor and take a look.
In some PHP applications, you need to write logs or record some information. In this case. You can use fopen(), fwrite() and fclose() to operate. You can also simply use file_get_contents() and file_put_contents().
file_put_contents() to write files. The default is to rewrite the file, which means the original content will be replaced. To append, use the parameter FILE_APPEND.
Write content in append form. When the flags parameter value is set to FILE_APPEND, it means writing new data by appending content after the existing file content:
FILE_APPEND:Write data by appending to the end of the file
int file_put_contents ( string filename, string data [, int flags [, resource context]] ) file_put_contents("log.txt", "Hello world everyone.", FILE_APPEND);
//Parameter description:
filename //To write Data file name
data //The data to be written. The type can be string, array (but not multidimensional array), or stream resource
flags //Optional, specifies how to open/write Import the file. Possible values:
FILE_USE_INCLUDE_PATH: // Check the built-in path for a copy of filename
FILE_APPEND:// // Appended at the end of the file Method to write data
LOCK_EX: //Lock the file
context //Optional, Context is a set of options through which the text can be modified Properties
#Many times the log needs to be wrapped. It is not recommended to use \r\n because:
In windows \r\n is a newline
In Mac \r is a newline
In Liunx\n is a newline
But PHP provides a constant to match different operating systems, namely:
PHP_EOL
file_put_contents("log.txt", "Hello world everyone.".PHP_EOL, FILE_APPEND);
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