php man page for is_resource

Query: is_resource

OS: php

Section: 3

Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar

IS_RESOURCE(3)								 1							    IS_RESOURCE(3)

is_resource - Finds whether a variable is a resource

SYNOPSIS
bool is_resource (mixed $var)
DESCRIPTION
Finds whether the given variable is a resource.
PARAMETERS
o $var - The variable being evaluated.
RETURN VALUES
Returns TRUE if $var is a resource, FALSE otherwise.
EXAMPLES
Example #1 is_resource(3) example <?php $db_link = @mysql_connect('localhost', 'mysql_user', 'mysql_pass'); if (!is_resource($db_link)) { die('Can't connect : ' . mysql_error()); } ?>
NOTES
Note is_resource(3) is not a strict type-checking method: it will return FALSE if $var is a resource variable that has been closed.
SEE ALSO
The resource-type documentation, get_resource_type(3). PHP Documentation Group IS_RESOURCE(3)
Related Man Pages
is_numeric(3) - php
mysql_select_db(3) - php
gettype(3) - php
isset(3) - php
is_float(3) - php
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