Last Modified: September 19, 2016 KB » [if] Shortcode Pro
Simple Expressions

Simple Expressions are supported by some [if /] Shortcode Attributes. They allow you to check multiple conditions within the context of a supporting Attribute, using logical operators such as AND, OR. You can also group conditions using round brackets, much like you would in a raw PHP expression.

Attributes Supporting Simple Expressions

• current_user_can="{capability|expr}"
• current_user_bought_product="{ID|SKU|expr}"
• current_user_can_download="{ID|SKU|expr}"
• current_user_meta="{key|expr}"
• current_user_option="{key|expr}"
• request_var="{key|expr}"
• Arbitrary Custom Attributes

Logical Operators in Simple Expressions

• AND (same as &&, which is also supported)
• OR (same as ||, which is also supported)

[if current_user_meta="first_name AND last_name"]
    First and last name are both filled.
[/if]
[if current_user_meta="!first_name OR !last_name"]
    First or last name is missing.
[/if]

Comparison Operators in Simple Expressions

• === (exactly equal to)
• !== (not exactly equal to)
• == (equal to; loose comparison)
• != (not equal to: loose comparison)
• <= (less than or equal to)
• >= (greater than or equal to)
• <> (less than or greater than)
• > (greater than)
• < (less than)

[if request_var="version == 1"]
    .../?version=1
[/if]
[if request_var="version === '1'"]
    .../?version=1 (using strict type comparison)
[/if]

String Literals (or Strings Containing Spaces)

When you need to test a string value, please wrap it in single quotes.

[if request_var="color == 'hot pink'"]
    Matches the string literal: 'hot pink'
    Single quotes required when string contains spaces.
[/if]
[if request_var="color == blue"]
    Valid only because the word blue does not contain spaces.
[/if]
[if request_var="color == 'blue'"]
    Same as previous example, but this is a better approach.
    When in doubt, use single quotes to be more specific.
[/if]
[if request_var="color == ''"]
    A color was not given; i.e., equal to an empty string.
[/if]

Negating (Testing for False)

• != As seen above (not equal to).
• !== As seen above (not exactly equal to).
• ! Before the parameter component.

[if current_user_can="!access_ccap_extras OR !edit_posts"]
    Missing access to one of these.
[/if]
[if current_user_meta="first_name != '' AND last_name != ''"]
    First and last name are both filled.
[/if]

Other Simple Expression Examples

[if current_user_can="(access_pkg_elite AND access_ccap_extras) OR edit_posts"]
    Has access to one of these.
[/if]

[if current_user_bought_product="(123 AND ACME-INSTALLER-PRO) OR ACME-ELITE-BUNDLE"]
    Bought something.
[/if]

[if current_user_can_download="(123 AND ACME-INSTALLER-PRO) OR ACME-ELITE-BUNDLE"]
    Can download something.
[/if]

[if current_user_meta="primary_blog == 1"]
    Primary blog ID is string 1.
[/if]

[if current_user_meta="_custom_key == 'string value'"]
    Matches the string literal 'string value'.
[/if]

[if current_user_meta="(paying_customer AND _order_count > 0) OR _money_spent > 0"]
    Made a purchase.
[/if]