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--- en:instr [2016/08/12 21:10]
admin
+++ en:instr [2020/02/28 10:46]
@@ Line 1: / Line 1: @@
-===== Instr (Function) =====
-==== Format ====
-**instr** ( [[stringexpressions|haystack_string_expression]] , [[stringexpressions|needle_string_expression]] )\\
-**instr** ( [[stringexpressions|haystack_string_expression]] , [[stringexpressions|needle_string_expression]] , //start_expr// )\\
-**instr** ( [[stringexpressions|haystack_string_expression]] , [[stringexpressions|needle_string_expression]] , //start_expr// , [[booleanexpressions|boolean_expression]])\\
-returns [[integerexpressions|integer_expression]]
-==== Description ====
-Check to see if the string [[stringexpressions|needle_string_expression]] is contained in the string [[stringexpressions|haystack_string_expression]].  If it is, then this function will return the index of starting character of the first place where [[stringexpressions|needle_string_expression]] occurs.  Otherwise, this function will return 0.
-You may optionally specify a starting location for the search to begin //start_expr//.  If the start is 1 or greater the search will begin from the specified character from the start.  If the start is < 0 then the search will begin from the nth character from the end.  The search will ALWAYS look forward.
-An optional [[booleanexpressions|boolean_expression]] may be used to specify that the search will treat upper and lower case letters the same.
-==== Note ====
-String indices begin at 1.
-==== Example ====
-<code>
-print instr("Hello", "lo")
-print instr("101,222,333",",",5)
-</code>
-will display
-<code>
-</code>
-==== See Also ====
-{{page>en:start#String Handling&noheader}}
-==== History ====
-|0.9.6.55|New to Version|
-|1.99.99.53|Added start position < 0|

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