WP deprecated function check

wp-deprecated-checker.sh

#!/bin/bash
#
# Wordpress Deprecated function checker
#
# Version: 0.2
#
# Author: Michiel Roos <[email protected]>
#         Jeff Buchbinder (https://github.com/jbuchbinder)
#
# www.php.net/manual/en/migration53.deprecated.php
#
# Original code: http://www.typofree.org/article/archive/2011/may/title/check-your-php-code-for-deprecated-ini-directives-and-functions/
#
# Jeff's notes:
#
# *) This version should return a non-zero bash "errorlevel" if deprecated
#    functions are found, which should allow easy integration into CI systems.
# *) This was adapted from a deprecated function checker to allow Wordpress
#    specific pre-upgrade checks.

tag=$1

if [ "$tag" == "" ]; then
    echo "Wordpress version must be specified."
    exit 1
fi

whereami="$( cd "$(dirname "$0")"; pwd )"

function dfunctions() {
    tag=$1

    # Derived from the list at http://codex.wordpress.org/Category:Deprecated_Functions
    # (Use Coral Cache to cut down on Wordpress TRAC load.)
    deprecated_sources=(
    	https://core.trac.wordpress.org/browser/tags/${tag}/src/wp-includes/deprecated.php?format=txt
    	https://core.trac.wordpress.org/browser/tags/${tag}/src/wp-admin/includes/deprecated.php?format=txt
    	https://core.trac.wordpress.org/browser/tags/${tag}/src/wp-includes/pluggable-deprecated.ph?format=txt
    	https://core.trac.wordpress.org/browser/tags/${tag}/src/wp-includes/ms-deprecated.php?format=txt
    	https://core.trac.wordpress.org/browser/tags/${tag}/src/wp-admin/includes/ms-deprecated.php?format=txt
    )

    for s in ${deprecated_sources}; do
	    wget -q -O /dev/stdout "$s" | grep '^function ' | cut -d' ' -f2 | cut -d'(' -f 1
    done
}
deprecatedFunctions=(
    $( dfunctions ${tag} )
)

len=${#deprecatedFunctions[*]}
i=0

echo "Checking for deprectated functions ______________________________________"
echo ""

found=0

while [ $i -lt $len ]; do
    echo "  // checking for '${deprecatedFunctions[$i]}()'"
    grep -rn --color --include=*.php "^[^#\/]*[^a-zA-Z_]${deprecatedFunctions[$i]}[[:space:]]*(" *;
    if [ $? -ne 0 ]; then
        found=1
    fi
    echo ""
    let i++
done

exit $found