Solutions for Project Euler problems, just for fun and maybe as a source of inspiration for those who struggle with some of the problems.
Each solution is implemented as a CLI program that reads the problem parameter from standard input and prints the solution result on standard output.
$ echo '1000' | ./euler001-proc.php
233168
Problem inputs are provided in -input files, for each problem.
Project Euler problem statements provide some form of test case, usually in the form of a smaller input value and the expected output value. These are provided here for each problem in -testinput and -testexpected files. For convenience, an automated test script is provided. This test script loops through all programs in the directory and executes them against the matching test input and expected output files.
$ ./test.sh
✓ euler001-func.php : OK
✓ euler001-proc.php : OK
✓ euler002-func.php : OK
✓ euler002-proc.php : OK
✓ euler003-func.php : OK
✓ euler003-proc.php : OK
✓ euler004-proc.php : OK
✓ euler005-proc.php : OK
✓ euler006-proc.php : OK
✓ euler007-proc.php : OK
✓ euler008-proc.php : OK
✓ euler009-proc.php : OK
✓ euler010-proc.php : OK
Feel free to do whatever you want with all this code.