| Function |
Meaning |
Syntax
|
| abs |
Absolute value |
number abs(number)
|
| acos |
Arc cosine |
number acos(number)
|
| addslashes |
Quote string with slashes |
string addslashes(string)
|
| asin |
Arc sine |
number asin(number)
|
| atan |
Arc tangent |
number atan(number)
|
| atan2 |
Arc tangent of two variables |
number atan2(number, number)
|
| ceil |
Round fractions up |
number ceil(number)
|
| checkdate |
Returns true(1) if it is a valid date in gregorian calendar |
bool checkdate(month,day,year)
|
| cos |
Cosine |
number cos(number)
|
| count |
count the number of answered (non-blank)questions in the list |
number count(arg1, arg12, ..., argN)
|
| countif |
Count the number of answered questions in the list equal the first argument |
number countif(matches, arg1, arg2, ... argN)
|
| countifop |
Count the number of answered questions in the list which pass the criteria (arg op value) |
number countifop(op, value, arg1, arg2, ... argN)
|
| date |
Format a local date/time |
string date(format [, timestamp=time()])
|
| exp |
Calculates the exponent of e |
number exp(number)
|
| fixnum |
Display numbers with comma as radix separator, if needed |
string fixnum(number)
|
| floor |
Round fractions down |
number floor(number)
|
| gmdate |
Format a GMT date/time |
string gmdate(format [, timestamp=time()])
|
| html_entity_decode |
Convert all HTML entities to their applicable characters (always uses ENT_QUOTES and UTF-8) |
string html_entity_decode(string)
|
| htmlentities |
Convert all applicable characters to HTML entities (always uses ENT_QUOTES and UTF-8) |
string htmlentities(string)
|
| expr_mgr_htmlspecialchars |
Convert special characters to HTML entities (always uses ENT_QUOTES and UTF-8) |
string htmlspecialchars(string)
|
| expr_mgr_htmlspecialchars_decode |
Convert special HTML entities back to characters (always uses ENT_QUOTES and UTF-8) |
string htmlspecialchars_decode(string)
|
| idate |
Format a local time/date as integer |
string idate(string [, timestamp=time()])
|
| if |
Excel-style if(test,result_if_true,result_if_false) |
if(test,result_if_true,result_if_false)
|
| implode |
Join array elements with a string |
string implode(glue,arg1,arg2,...,argN)
|
| intval |
Get the integer value of a variable |
int intval(number [, base=10])
|
| is_empty |
Determine whether a variable is considered to be empty |
bool is_empty(var)
|
| is_float |
Finds whether the type of a variable is float |
bool is_float(var)
|
| is_int |
Find whether the type of a variable is integer |
bool is_int(var)
|
| is_nan |
Finds whether a value is not a number |
bool is_nan(var)
|
| is_null |
Finds whether a variable is NULL |
bool is_null(var)
|
| is_numeric |
Finds whether a variable is a number or a numeric string |
bool is_numeric(var)
|
| is_string |
Find whether the type of a variable is string |
bool is_string(var)
|
| join (in last 2.0 version) |
Join elements as a new string |
join(arg1, arg2, ... argN)
|
| list |
Return comma-separated list of non-blank values |
string list(arg1, arg2, ... argN)
|
| log |
The logarithm of number to base, if given, or the natural logarithm. |
number log(number,base=e)
|
| ltrim |
Strip whitespace (or other characters) from the beginning of a string |
string ltrim(string [, charlist])
|
| max |
Find highest value |
number max(arg1, arg2, ... argN)
|
| min |
Find lowest value |
number min(arg1, arg2, ... argN)
|
| mktime |
Get UNIX timestamp for a date (each of the 6 arguments are optional) |
number mktime([hour [, minute [, second [, month [, day [, year ]]]]]])
|
| modulo-function |
The modulo function is not supported yet. You can use the floor() function instead |
floor(x/y)==(x/y)
|
| nl2br |
Inserts HTML line breaks before all newlines in a string |
string nl2br(string)
|
| number_format |
Format a number with grouped thousands |
string number_format(number)
|
| pi |
Get value of pi |
number pi()
|
| pow |
Exponential expression |
number pow(base, exp)
|
| quoted_printable_decode |
Convert a quoted-printable string to an 8 bit string |
string quoted_printable_decode(string)
|
| quoted_printable_encode |
Convert a 8 bit string to a quoted-printable string |
string quoted_printable_encode(string)
|
| quotemeta |
Quote meta characters |
string quotemeta(string)
|
| rand |
Generate a random integer, see this example |
int rand() OR int rand(min, max)
|
| regexMatch |
compare a string to a regular expression |
bool regexMatch(pattern,input)
|
| round |
Rounds a number to an optional precision |
number round(val [, precision])
|
| rtrim |
Strip whitespace (or other characters) from the end of a string |
string rtrim(string [, charlist])
|
| sin |
Sine |
number sin(arg)
|
| sprintf |
Return a formatted string |
string sprintf(format, arg1, arg2, ... argN)
|
| sqrt |
Square root |
number sqrt(arg)
|
| stddev |
Calculate the Sample Standard Deviation for the list of numbers |
number stddev(arg1, arg2, ... argN)
|
| str_pad |
Pad a string to a certain length with another string |
string str_pad(input, pad_length [, pad_string])
|
| str_repeat |
Repeat a string |
string str_repeat(input, multiplier)
|
| str_replace |
Replace all occurrences of the search string with the replacement string |
string str_replace(search, replace, subject)
|
| strcasecmp |
Binary safe case-insensitive string comparison |
int strcasecmp(str1, str2)
|
| strcmp |
Binary safe string comparison |
int strcmp(str1, str2)
|
| strip_tags |
Strip HTML and PHP tags from a string |
string strip_tags(str, allowable_tags)
|
| stripos |
Find position of first occurrence of a case-insensitive string |
int stripos(haystack, needle [, offset=0])
|
| stripslashes |
Un-quotes a quoted string |
string stripslashes(string)
|
| stristr |
Case-insensitive strstr |
string stristr(haystack, needle [, before_needle=false])
|
| strlen |
Get string length |
int strlen(string)
|
| strpos |
Find position of first occurrence of a string |
int strpos(haystack, needle [ offset=0])
|
| strrev |
Reverse a string |
string strrev(string)
|
| strstr |
Find first occurrence of a string |
string strstr(haystack, needle)
|
| strtolower |
Make a string lowercase |
string strtolower(string)
|
| strtotime |
Parse about any English textual datetime description into a Unix timestamp |
int strtotime(string)
|
| strtoupper |
Make a string uppercase |
string strtoupper(string)
|
| substr |
Return part of a string |
string substr(string, start [, length])
|
| sum |
Calculate the sum of values in an array |
number sum(arg1, arg2, ... argN)
|
| sumifop |
Sum the values of answered questions in the list which pass the criteria (arg op value) |
number sumifop(op, value, arg1, arg2, ... argN)
|
| tan |
Tangent |
number tan(arg)
|
| time |
Return current UNIX timestamp |
number time()
|
| trim |
Strip whitespace (or other characters) from the beginning and end of a string |
string trim(string [, charlist])
|
| ucwords |
Uppercase the first character of each word in a string |
string ucwords(string)
|
| unique |
Returns true if all non-empty responses are unique |
boolean unique(arg1, ..., argN)
|