Run php scripts from the command line with full access to WordPress functions.

php_scripts_with_wp.php

<?php
/**
 * A utility script to load WordPress to run
 * php scripts directly from the command line.
 */

if ( php_sapi_name() !== 'cli' ) {
  die( "This script is meant to be run from the command line" );
}

set_time_limit(0);
ini_set( 'max_execution_time', 0 );  // Sets execution time to no limit
ini_set( "memory_limit", "-1" );     // Sets memory limit to no limit

function find_wordpress_base_path() {
  $dir = dirname( __FILE__ );

  do {
    if( file_exists( $dir . "/wp-config.php" ) ) {
      return $dir;
    }
  } while( $dir = realpath( "$dir/.." ) );

  return null;
}

define( 'BASE_PATH', find_wordpress_base_path() . "/" );
define( 'WP_USE_THEMES', false );
require( BASE_PATH . 'wp-load.php' );

// Common WP globals.
global $wp, $wp_query, $wp_the_query, $wp_rewrite, $wp_did_header, $wpdb;

// End preliminary WordPress load.
// Custom script can continue below this line.

/**
 * Array search utility function.
 */
function sub_array_search( $array, $field, $value ) {
   foreach( $array as $key => $sub_array ) {
      if ( $sub_array[ $field ] === $value )
         return $key;
   }
   return false;
}