Find local PHP file changes

#!/bin/bash
#
# Script to scan all your PHP files and look for changes
#

# To make the Internal Field Separator to accept spaces
IFS=$'\t\n'

# To store the path where this script is located
SCRIPT_PATH=${0%/*}

# Go to the path where the script is located
cd $SCRIPT_PATH

# Create a string with today's date
TODAY=`date +%Y%m%d`

# Create a string for yesterday's date
YESTERDAY=$(date -d yesterday +"%Y%m%d")

# The path where your public PHP files are located
PHP_FILES_PATH=~/

# Find all the PHP files and save a list containing each file location and the size
find $PHP_FILES_PATH -type f -iname "*.php" -exec ls -l {} \; | awk '{ print $9 "\t" $5 }' > $TODAY.log

# Find the difference between today's lists and yesterday's list returning an output only if there is any difference
diff --side-by-side --suppress-common-lines $TODAY.log $YESTERDAY.log