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This article mainly introduces "how to use fgets in php". In daily operation, I believe many people have doubts about how to use fgets in php. The editor consulted all kinds of materials and sorted out simple and easy-to-use operation methods. I hope it will be helpful for you to answer the doubts about "how to use fgets in php". Next, please follow the editor to study!

In PHP, fgets means "read a row of data from a file"; the fgets () function reads a row of data from an open file at a time and returns data of a specified length, with the syntax "fgets ($handle,$length)".

Operating environment of this tutorial: windows7 system, PHP7.1 version, DELL G3 computer

PHP fgets is a function developed based on php language that can read a line of data from a file pointer and return data.

The fgets () function is used to read one row of data at a time from an open file. The syntax format of this function is as follows:

Fgets ($handle,$length)

Where the parameter $handle is the open file, and the parameter $length is optional, which is used to set the length of the data to be read.

The function reads a line from the specified file $handle and returns a string with a maximum length of $length-1 bytes. Stop when you encounter a newline character, EOF, or read the $length-1 byte. If the $length parameter is omitted, the length of 1k (1024 bytes) is read by default.

Example:

Use the fgets () function to read a line of data from the "test.txt" file

Then the loop statement can also read all the data line by line:

At this point, the study on "how to use fgets in php" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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