$Web Hdr Parm Lstr: Difference between revisions
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{{DISPLAYTITLE:$Web_Hdr_Parm_Lstr}} | {{DISPLAYTITLE:$Web_Hdr_Parm_Lstr}} | ||
<span class="pageSubtitle" | <span class="pageSubtitle">Value of header parameter to longstring</span> | ||
$Web_Hdr_Parm_Lstr retrieves the value of an HTTP header parameter as a [[Longstrings|longstring]]. | <var>$Web_Hdr_Parm_Lstr</var> retrieves the value of an HTTP header parameter as a [[Longstrings|longstring]]. | ||
$Web_Hdr_Parm_Lstr takes two arguments, and it returns a longstring (or null for any error condition). | <var>$Web_Hdr_Parm_Lstr</var> takes two arguments, and it returns a longstring (or null for any error condition). | ||
==Syntax== | ==Syntax== | ||
<p class="syntax">< | <p class="syntax"><span class="term">%string</span> = <span class="literal">$Web_Hdr_Parm_Lstr</span>( <span class="term">name</span>, <span class="term">occurrence</span> ) | ||
< | </p> | ||
===Syntax terms=== | ===Syntax terms=== | ||
<table class="syntaxTable"> | <table class="syntaxTable"> | ||
<tr><th>name</th> | <tr><th>name</th> | ||
<td>The name of the header parameter, returned by $Web_Hdr_Name. This is a required argument if ''occurrence'' is not specified; otherwise it is optional.</td></tr> | <td>The name of the header parameter, returned by <var>$Web_Hdr_Name</var>. This is a required argument if ''occurrence'' is not specified; otherwise it is optional.</td></tr> | ||
<tr><th>occurrence</th> | <tr><th>occurrence</th> | ||
<td>The occurrence number of a header parameter, or the occurrence number of the header parameter matching ''name'', if name is specified. Optional argument if ''name'' is specified, otherwise it is required. | <td>The occurrence number of a header parameter, or the occurrence number of the header parameter matching ''name'', if name is specified. Optional argument if ''name'' is specified, otherwise it is required. | ||
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==Usage notes== | ==Usage notes== | ||
<ul> | <ul> | ||
<li>$Web_Hdr_Parm_Lstr works much like $ | <li><var>$Web_Hdr_Parm_Lstr</var> works much like <var>$Web_Hdr_Parm</var>, except for the following: | ||
<ul> | <ul> | ||
<li>It can return more than 255 bytes of data into a longstring. | <li>It can return more than 255 bytes of data into a longstring. | ||
Latest revision as of 02:03, 16 April 2013
Value of header parameter to longstring
$Web_Hdr_Parm_Lstr retrieves the value of an HTTP header parameter as a longstring.
$Web_Hdr_Parm_Lstr takes two arguments, and it returns a longstring (or null for any error condition).
Syntax
%string = $Web_Hdr_Parm_Lstr( name, occurrence )
Syntax terms
| name | The name of the header parameter, returned by $Web_Hdr_Name. This is a required argument if occurrence is not specified; otherwise it is optional. |
|---|---|
| occurrence | The occurrence number of a header parameter, or the occurrence number of the header parameter matching name, if name is specified. Optional argument if name is specified, otherwise it is required. |
Usage notes
- $Web_Hdr_Parm_Lstr works much like $Web_Hdr_Parm, except for the following:
- It can return more than 255 bytes of data into a longstring.
- It causes request cancellation if the result would be truncated, either on assignment to a target STRING %variable, or as input to a STRING $function argument or subroutine parameter.
- It does not have position and length arguments (arguments 3 and 4).
Examples
This example places the value of two header parameters into a User Language Longstring variable of the same name.
%accept = $Web_Hdr_Parm_Lstr('ACCEPT') %referer = $Web_Hdr_Parm_Lstr('REFERER')