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How to read from stdin

December 23rd, 2011 | admin

Reading from stdin is not something familiar to many php coders, so here are a few ways to read in the puzzle you are given from stdin using the PHP CLI.

$s=fgets(STDIN);

Reads in a complete line of input as a string, complete with end of line character.

$c=fgetc(STDIN);

Reads in a single character.

Also worth looking at are fscanf(), fgetcsv(), fread()

To test your scripts you can use this command from a linux shell (other operating systems may differ)

php your_script.php < test.txt

Where test.txt is a plain text file containing your sample input.

If you want to join codegolf.com's challenages via PHP language, you need to know how to read from stdin via PHP CLI.

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