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Use file() or file_get_contents() to create either an array or a string. process the file contents as needed
31 lip 2022 · Using the file() function is an easy way to read a file line by line in PHP if you are not worried about memory usage. However, you will have to get more creative if memory usage is an issue because file() reads the entire file into an array at once.
11 sty 2024 · The most common approach for reading a file line by line is to use the fgets() function within a loop. The fgets() function reads a line from a file pointer and returns it as a string. The end of the line is determined by a newline character or EOF (end-of-file).
If you need to read an entire file into a string, use file_get_contents(). fgets() is most useful when you need to process the lines of a file separately.
Read one line from the open file: <?php $file = fopen ("test.txt","r"); echo fgets ($file); fclose ($file); ?> Run Example » Definition and Usage. The fgets () function returns a line from an open file. Syntax. fgets (file, length) Parameter Values. Technical Details. More Examples. Example. Read open file, line by line:
Use the fgets() function to read a line from a file. Use the feof() function to test the end-of-file has been reached. Use the filesize() function to get the size of the file.
Returns the file in an array. Each element of the array corresponds to a line in the file, with the newline still attached. Upon failure, file() returns false. Note: Each line in the resulting array will include the line ending, unless FILE_IGNORE_NEW_LINES is used.
