StringStartsWith (Function)

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Functions for managing strings

StringStartsWith

Presentation

Example

Characters taken into account for the punctuation and the spaces

StringStartsWith and UNICODE

See also

StringStartsWith (Function)

In french: ChaîneCommencePar

Checks whether a character string starts:

with a specific character string.
with one of the character strings found in a list.

Versions 16 and later

This function is now available for PHP sites.

New in version 16

This function is now available for PHP sites.

This function is now available for PHP sites.

Versions 17 and later

This function is now available for Android applications.

This function is now available for the Java applications.

New in version 17

This function is now available for Android applications.

This function is now available for the Java applications.

This function is now available for Android applications.

This function is now available for the Java applications.

Versions 18 and later

This function is now available in Android Widget mode.

This function is now available in Windows Store apps mode.

This function is now available for iPhone/iPad applications.

New in version 18

This function is now available in Android Widget mode.

This function is now available in Windows Store apps mode.

This function is now available for iPhone/iPad applications.

This function is now available in Android Widget mode.

This function is now available in Windows Store apps mode.

This function is now available for iPhone/iPad applications.

Versions 20 and later

This function is now available for Windows Phone applications.

New in version 20

This function is now available for Windows Phone applications.

Versions 21 and later

This function is now available in Apple Watch mode.

This function is now available in Universal Windows 10 App mode.

New in version 21

This function is now available in Apple Watch mode.

This function is now available in Universal Windows 10 App mode.

This function is now available in Apple Watch mode.

This function is now available in Universal Windows 10 App mode.

Versions 25 and later

This function is now available in browser code.

New in version 25

This function is now available in browser code.

Example

// Checks whether the response received from a Web server corresponds to a known response
MyResponse is string
MyResponse = HTTPGetResult()
IF StringStartsWith(MyResponse, "HTTP/1.0 20") <> 0 THEN
ProcessSuccessResponse(MyResponse)
END

Syntax

Checking whether a character string starts with another string Hide the details

<Result> = StringStartsWith(<Initial string> , <Sought string> [, <Search options>])

<Result>: Integer

Size of the corresponding element in the initial string,
0 if <Initial string> does not start with <Sought string>.

<Initial string>: Character string (with quotes)

String to compare.

<Sought string>: Character string (with quotes)

String that must be compared to the beginning of <Initial string>.

<Search options>: Optional Integer constant (combination of constants)

Options used for the search:
ccNormal
(Default value) Standard comparison, similar to the operator '='.
ccIgnoreAccent Comparison while ignoring the accented characters.
ccIgnoreCase Comparison while ignoring the case (uppercase/lowercase characters).
ccIgnoreSpace Comparison while ignoring the space characters found before and after the character strings to compare.
Versions 20 and later
ccIgnoreInsideSpace
New in version 20
ccIgnoreInsideSpace
ccIgnoreInsideSpace Comparison while ignoring the space characters found inside the character strings to compare.
This constant is not available.
ccIgnorePunctuationAndSpace Comparison while ignoring the punctuation and the space characters (see the Notes for more details).

Not available in Universal Windows 10 App

Checking whether a character string starts with one of the strings found in the list Hide the details

<Result> = StringStartsWith(<Initial string> , <List of sought strings> [, <Search options>])

<Result>: Integer

Size of the corresponding element,
0 if <Initial string> does not start with one of the elements of <List of sought strings>.

<Initial string>: Character string (with quotes)

String to compare.

<List of sought strings>: Character string, array, ...

List of elements that must be compared to the beginning of <Initial string>. This parameter can correspond to:
a simple character string,
a character string variable,
an array of character strings (in the following format: ["string1", "string2", "string3"]
an "array of character strings" variable.

<Search options>: Optional Integer constant (combination of constants)

Options used for the search:
ccNormal
(Default value) Standard comparison, similar to the operator ='.
ccIgnoreAccent Comparison while ignoring the accented characters.
ccIgnoreCase Comparison while ignoring the case (uppercase/lowercase characters)
ccIgnoreSpace Comparison while ignoring the space characters found before and after the character strings to compare
Versions 20 and later
ccIgnoreInsideSpace
New in version 20
ccIgnoreInsideSpace
ccIgnoreInsideSpace Comparison while ignoring the space characters found inside the character strings to compare.
This constant is not available.
ccIgnorePunctuationAndSpace Comparison while ignoring the punctuation and the space characters (see the Notes for more details).

Remarks

Characters taken into account for the punctuation and the spaces

The characters taken into account for the punctuation and the spaces are supplied by the system. To get the list of these characters, write the following WLanguage code:

s is string
FOR i = 0 TO 255
IF Charact(i) <> StringFormat(Charact(i), ccIgnorePunctuationAndSpace) THEN
s += Charact(i)
END
END
Info(s)
ToClipboard(s)

StringStartsWith and UNICODE

You have the ability to use ANSI strings, Unicode strings and buffers in the different parameters of the function.

The following conversion rule is used for the Ansi systems (Windows or Linux):

If at least one of the strings is a buffer, all the strings are converted into buffers and the operation is performed with buffers
If the first condition is not fulfilled, if at least one of the strings in in Unicode format, all the strings are converted into Unicode and the operation is performed in Unicode (the conversion is performed with the current character set if necessary)
Otherwise, the operation is performed in Ansi.

The following conversion rule is used for the Unicode systems (Windows CE):

If at least one of the strings is a buffer, all the strings are converted into buffers and the operation is performed with buffers,
Otherwise, the operation is performed in Unicode.

See Managing the UNICODE format for more details.

Business / UI classification : Neutral code

Component : wd250vm.dll