add empty and in_array modifier doc (#1113)

2 files changed, 27 insertions, 0 deletions

diff --git a/docs/designers/language-modifiers/language-modifier-empty.md b/docs/designers/language-modifiers/language-modifier-empty.md
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+# empty
+
+Returns true if var does not exist or has a value that is empty or equal to zero, aka falsey, see conversion to boolean. Otherwise returns false.
+
+## Basic usage
+
+```smarty
+{if $myVar|empty}it's an empty variable{/if}
+{if empty($myVar)}it's an empty variable{/if}
+```
diff --git a/docs/designers/language-modifiers/language-modifier-in_array.md b/docs/designers/language-modifiers/language-modifier-in_array.md
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+# in_array
+
+test if value is contained in an array
+
+## Basic usage
+
+```smarty
+{if in_array('value2', $myarray)} value2 is in myarray{/if}
+```
+
+Can be replaced by operator *is in*
+
+```smarty
+{if 'value2' is in $myarray}value2 is in myarray{/if}
+```
+
+See Also [operators](../language-basic-syntax/language-syntax-operators.md)