Bump version is a single bash script that increase the version within a php file, according to the tag "version" of the PHPDoc standard.

bump-version.sh

#!/bin/bash
## Copyright (C) 2017 - All Rights Reserved
## Permission to copy/modify is granted under the MIT license
## 
## Script: bump-version.sh
## Description: Increase the version within a php file, according to the tag @version
##              of the PHPDoc standard
## Style: Shell Style Guide - https://google.github.io/styleguide/shell.xml
## Author: Christopher CM (@Chofoteddy)
## Created: 2017-12-16

###########################################
# Display "help" information.
# 
# Globals:
#   None
# Arguments:
#   None
# Returns:
#   None
###########################################
display_help() {
    echo "Usage: $0 [OPTION] [PATH]";
    echo
    echo 'Mandatory options:';
    echo '   -m     Upgrade major (X.0.0).';
    echo '   -i     Upgrade minor (0.X.0).';
    echo '   -p     Upgrade patch (0.0.X).';
    echo
}

if [[ $# -eq 0 ]]; then
    echo 'Arguments are missing.' >&2;
    echo "Try: '$0 -h' for more information." >&2;
    exit 2;
fi

files="$(find $2 -type f -name '*.php')";

for file in $files; do
    version="$(cat $file | egrep -o '@version ([0-9]+\.?){3}')";
    semver="$(egrep -o '([0-9]+\.?){3}' <<< $version)";

    if [[ -z $semver ]]; then
        continue;
    fi

    declare -a array_version=($(tr '.' '\n' <<< $semver));
    major_version=${array_version[0]};
    minor_version=${array_version[1]};
    patch_version=${array_version[2]};
    
    case $1 in
        -m )
            new_major="$(expr $major_version + 1)";
            array_version[0]=$new_major;
            array_version[1]=0;
            array_version[2]=0;
            ;;

        -i )
            new_minor="$(expr $minor_version + 1)";
            array_version[1]=$new_minor;
            array_version[2]=0;
            ;;

        -p )
            new_patch="$(expr $patch_version + 1)";
            array_version[2]=$new_patch;
            ;;

        -h )
            display_help;
            break;
            ;;
    esac

    new_semver="$(tr ' ' '.' <<< ${array_version[*]})";

    echo 'File: '$file;
    echo -e '... \e[96mUpgrading version: \e[91m'$semver \
            '\e[0mto \e[92m'$new_semver'\e[0m\n';

    sed -i "s/\(@version\) $semver/\1 $new_semver/g" $file;

done

exit;