For Developers Overview
  • API Basics
    Introduction to the API API Technical Details API Postbacks User Queries for Job and List API Error and Response Codes API Test Page
  • API Endpoints
    ad/plan blast blast_repeat content event include job – Queries job – Content job – Import and Export job – Update list purchase preview return send settings SPM stats template trigger user
  • API Client Libraries
    API Client Libraries Overview Java Library JavaScript API Library .NET Library Node.js Library Perl Library PHP5 Library Python Library Ruby Library
  • Zephyr Guide
    Zephyr Overview Common Zephyr Examples Zephyr Examples Library Zephyr Template Variables Zephyr Expressions And Operators Zephyr Control Structures Zephyr Assignment Operator For Variables Single Vs. Double Braces “Profile” Object “Message” Object “Blast” Object “Feed” Object Link Rewriting With Zephyr Set User Vars or List Membership On-Click with URL Parameters Forward To A Friend
  • Zephyr Functions
  • Zephyr Tutorial
    Zephyr Tutorials Lesson 1: Zephyr Basics Lesson 2: Data Basics
  • Content Triggers
    Content Triggers

    • length

    Description

    Returns the length of a list or strings. 
     integer length( mixed input )
    When passed a list, returns the number of items in that list. When passed an object, returns the number of keys in the object. When passed a string, returns the number of characters. When passed anything else, converts to a string and returns the number of characters.

    Example

     {length('string')} = 6 {length([1,2,3])} = 3

    Check the Number of Purchases a User Has Ever Made

    Use Case: You need to check the amount of purchases a user has ever made. If it’s more than 10, display a “thank you” message at the top of the template.

    Zephyr:

    {if length(profile.purchases) > 10}
Thank you for being a loyal customer! Take $15 off your next purchase.
{/if}

    Explanation: This scripts uses the length() function to check the number of purchases a user has ever made by referencing the “profile” object, specifically, the “purchases” array, which is an array of all user purchases. It is then wrapped in a conditional “if” statement that says to show a discount offer if the length of purchases is greater than 10, i.e. the user has purchased more than ten times.

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