8 String functions

8 String functions

All functions listed here are supported in:

Some general notes on function parameters:

Function parameters are separated by a comma
Expressions are accepted as parameters
String parameters must be double-quoted; otherwise they might get misinterpreted
Optional function parameters (or parameter parts) are indicated by < >

FUNCTION
	Description	Function-specific parameters	Comments
ascii (value)
	The ASCII code of the leftmost character of the value.	value - value to check	Supported value types: string, text, log For example, a value like ‘Abc’ will return ‘65’ (ASCII code for ‘A’). Example: => ascii(last(/host/key))
bitlength (value)
	The length of value in bits.	value - value to check	Supported value types: string, text, log, integer Example: => bitlength(last(/host/key))
bytelength (value)
	The length of value in bytes.	value - value to check	Supported value types: string, text, log, integer Example: => bytelength(last(/host/key))
char (value)
	Return the character by interpreting the value as ASCII code.	value - value to check	Supported value types: integer The value must be in the 0-255 range. For example, a value like ‘65’ (interpreted as ASCII code) will return ‘A’. Example: => char(last(/host/key))
concat (<value1>,<value2>,…)
	The string resulting from concatenating referenced item values or constant values.	value - a value returned by one of the history functions or a constant value (string, integer, or float number)	Supported value types: string, text, log, float, integer For example, a value like ‘Zab’ concatenated to ‘bix’ (the constant string) will return ‘Zabbix’. Must contain at least two parameters. Examples: => concat(last(/host/key),“bix”) => concat(“1 min: “,last(/host/system.cpu.load[all,avg1]),”, 15 min: “,last(/host/system.cpu.load[all,avg15]))
insert (value,start,length,replacement)
	Insert specified characters or spaces into the character string beginning at the specified position in the string.	value - value to check start - start position length - positions to replace replacement - replacement string	Supported value types: string, text, log For example, a value like ‘Zabbbix’ will be replaced by ‘Zabbix’ if ‘bb’ (starting position 3, positions to replace 2) is replaced by ‘b’. Example: => insert(last(/host/key),3,2,“b”)
left (value,count)
	The leftmost characters of the value.	value - value to check count - number of characters to return	Supported value types: string, text, log For example, you may return ‘Zab’ from ‘Zabbix’ by specifying 3 leftmost characters to return. Example: => left(last(/host/key),3) - return three leftmost characters See also right().
length (value)
	The length of value in characters.	value - value to check	Supported value types: str, text, log Example: => length(last(/host/key)) → length of the latest value => length(last(/host/key,#3)) → length of the third most recent value => length(last(/host/key,#1:now-1d)) → length of the most recent value one day ago
ltrim (value,<chars>)
	Remove specified characters from the beginning of string.	value - value to check chars - (optional) specify characters to remove Whitespace is left-trimmed by default (if no optional characters are specified).	Supported value types: string, text, log Example: => ltrim(last(/host/key)) - remove whitespace from the beginning of string => ltrim(last(/host/key),“Z”) - remove any ‘Z’ from the beginning of string => ltrim(last(/host/key),“ Z”) - remove any space and ‘Z’ from the beginning of string See also: rtrim(), trim()
mid (value,start,length)
	Return a substring of N characters beginning at the character position specified by ‘start’.	value - value to check start - start position of substring length - positions to return in substring	Supported value types: string, text, log For example, it is possible return ‘abbi’ from a value like ‘Zabbix’ if starting position is 2, and positions to return is 4). Example: => mid(last(/host/key),2,4)=”abbi”
repeat (value,count)
	Repeat a string.	value - value to check count - number of times to repeat	Supported value types: string, text, log Example: => repeat(last(/host/key),2) - repeat the value two times
replace (value,pattern,replacement)
	Find pattern in the value and replace with replacement. All occurrences of the pattern will be replaced.	value - value to check pattern - pattern to find replacement - string to replace the pattern with	Supported value types: string, text, log Example: => replace(last(/host/key),“ibb”,“abb”) - replace all ‘ibb’ with ‘abb’
right (value,count)
	The rightmost characters of the value.	value - value to check count - number of characters to return	Supported value types: string, text, log For example, you may return ‘bix’ from ‘Zabbix’ by specifying 3 rightmost characters to return. Example: => right(last(/host/key),3) - return three rightmost characters See also left().
rtrim (value,<chars>)
	Remove specified characters from the end of string.	value - value to check chars - (optional) specify characters to remove Whitespace is right-trimmed by default (if no optional characters are specified).	Supported value types: string, text, log Example: => rtrim(last(/host/key)) - remove whitespace from the end of string => rtrim(last(/host/key),“x”) - remove any ‘x’ from the end of string => rtrim(last(/host/key),“x “) - remove any ‘x’ or space from the end of string See also: ltrim(), trim()
trim (value,<chars>)
	Remove specified characters from the beginning and end of string.	value - value to check chars - (optional) specify characters to remove Whitespace is trimmed from both sides by default (if no optional characters are specified).	Supported value types: string, text, log Example: => trim(last(/host/key)) - remove whitespace from the beginning and end of string => trim(last(/host/key),““) - remove ‘‘ from the beginning and end of string See also: ltrim(), rtrim()