$Web IsIndex Parm Lstr: Difference between revisions
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<span class="pageSubtitle"><section begin="desc" />Value of URL parameter to longstring<section end="desc" /></span> | <span class="pageSubtitle"><section begin="desc" />Value of URL parameter to longstring<section end="desc" /></span> | ||
$Web_IsIndex_Parm_Lstr retrieves the value of a URL parameter as a longstring. | $Web_IsIndex_Parm_Lstr retrieves the value of a URL parameter as a [[Longstrings|longstring]]. | ||
Since isindex fields are more commonly called "URL parameters," you may want to use the synonym for this $function, [[$Web_URL_Parm_Lstr]]. | Since isindex fields are more commonly called "URL parameters," you may want to use the synonym for this $function, [[$Web_URL_Parm_Lstr]]. | ||
$Web_IsIndex_Parm_Lstr takes two arguments and returns a longstring (or null for any error condition). | |||
==Syntax== | ==Syntax== | ||
<p class="syntax"><section begin="syntax" /> %STRING = $Web_IsIndex_Parm_Lstr( name, occurrence ) | <p class="syntax"><section begin="syntax" /> %STRING = $Web_IsIndex_Parm_Lstr( name, occurrence ) | ||
<section end="syntax" /></p> | <section end="syntax" /></p> | ||
===Syntax terms=== | |||
<table class="syntaxTable"> | <table class="syntaxTable"> | ||
<tr><th>name</th> | <tr><th>name</th> | ||
| Line 19: | Line 21: | ||
==Usage notes== | |||
<ul> | |||
<li>$Web_IsIndex_Parm_Lstr works much like $WEB_ISINDEX_PARM, except for the following: | |||
< | |||
$Web_IsIndex_Parm_Lstr works much like $WEB_ISINDEX_PARM, except for the following: | |||
<ul> | <ul> | ||
| Line 36: | Line 29: | ||
<li>It causes request cancellation if the result would be truncated, either on assignment to the target STRING %variable, or as input to a STRING $function argument or subroutine parameter. | <li>It causes request cancellation if the result would be truncated, either on assignment to the target STRING %variable, or as input to a STRING $function argument or subroutine parameter. | ||
<li>It does not have position and length arguments (arguments 3 and 4). | <li>It does not have position and length arguments (arguments 3 and 4). | ||
</ul> | </ul></ul> | ||
==Examples== | |||
If you have a URL that looks like: | |||
<p class="code">http://myhost.edu/whatever?war=peace&love=hate | |||
</p> | |||
$ | The following will retrieve the values of the <code>War</code> and<code>Love</code> fields into longstrings called <code>%war</code> and<tt>%love</tt>. | ||
<p class="code">%war = $web_form_parm_lstr('WAR') | |||
%love = $web_form_parm_lstr('LOVE') | |||
</p> | |||
==See also== | ==See also== | ||
Revision as of 22:35, 12 June 2012
<section begin="desc" />Value of URL parameter to longstring<section end="desc" />
$Web_IsIndex_Parm_Lstr retrieves the value of a URL parameter as a longstring.
Since isindex fields are more commonly called "URL parameters," you may want to use the synonym for this $function, $Web_URL_Parm_Lstr.
$Web_IsIndex_Parm_Lstr takes two arguments and returns a longstring (or null for any error condition).
Syntax
<section begin="syntax" /> %STRING = $Web_IsIndex_Parm_Lstr( name, occurrence ) <section end="syntax" />
Syntax terms
| name | The name of the URL parameter, returned by $Web_IsIndex_Name. This is a required argument if occurrence is not specified; otherwise it is optional. |
|---|---|
| occurrence | The occurrence number of a URL parameter, or the occurrence number of the URL parameter matching name, if name is specified. This is an optional argument if name is specified; otherwise it is required. |
Usage notes
- $Web_IsIndex_Parm_Lstr works much like $WEB_ISINDEX_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 the 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
If you have a URL that looks like:
http://myhost.edu/whatever?war=peace&love=hate
The following will retrieve the values of the War andLove fields into longstrings called %war and%love.
%war = $web_form_parm_lstr('WAR') %love = $web_form_parm_lstr('LOVE')