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subStr Function
Retrieves part of a string.
str subStr(str _text, int _position, int _number)
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Parameter
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Description
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_text
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The original string.
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_position
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The position in _text to begin the new string.
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_number
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The number of characters to select from _position onwards.
If there is a minus sign preceding _number, the system selects the substring backward from the specified position.
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A new string composed of _number characters from _text, beginning at the character represented by _position.
// Returns the text string CDEFG.
subStr("ABCDEFGHIJ",3,5);
// Returns the text string DEFG.
subStr("ABCDEFGHIJ",7,-4);