PHP lint files, for example due migration to PHP7

php7-lint.sh

#!/bin/bash

find . -name '*.php' | xargs -i php -l {} | grep -v 'No syntax errors'

Cool idea! Sadly, on macOS Mojave 10.14.6 the snippet throws an error:

$ find . -name '*.php' | xargs -i php -l {} | grep -v 'No syntax errors'
xargs: illegal option -- i
usage: xargs [-0opt] [-E eofstr] [-I replstr [-R replacements]] [-J replstr]
         [-L number] [-n number [-x]] [-P maxprocs] [-s size]
         [utility [argument ...]]

It seems that -i flag is deprecated. Fortunately, I got the snippet working by replacing -i by -I {}.

$ find . -name '*.php' | xargs -I {} php -l {} | grep -v 'No syntax errors'

Parse error: syntax error, unexpected 'if' (T_IF) in ./src/example.php on line 30
Errors parsing ./src/example.php

Note: the snippet seems to exit at the first lint issue. I had to fix the issue and run the snippet again and again to catch all the issues.