w3resource

PHP : is_object() function

Description

The is_object() function is used to find whether a variable is an object or not.

Version:

(PHP 4 and above)

Syntax:

is_object(var_name)

Parameter:

Name Description Required /
Optional
Type
var_name The variable being checked Required Mixed*

*Mixed: Mixed indicates that a parameter may accept multiple (but not necessarily all) types.

Return value:

TRUE if var_name is an object, FALSE otherwise.

Value Type: Boolean.

Example:

<?php
function get_subjects($obj_name)
{
if(!is_object($obj_name))
{
return(false);
}
return($obj_name->subjects);
}
$obj_name = new stdClass;
$obj_name->subjects = Array('Physics', 'Chemistry', 'Mathematics');
var_dump(get_subjects(NULL));
var_dump(get_subjects($obj_name));
?>

Output:

bool(false)  array(3) {    [0]=>    string(7) "Physics"    [1]=>    string(9) "Chemistry"    [2]=>    string(11) "Mathematics"  } 

View the example in the browser

Practice here online :

See also

PHP Function Reference

Previous: is_numeric
Next: is_real



PHP: Tips of the Day

PHP - how to create a newline character?

Only double quoted strings interpret the escape sequences \r and \n as '0x0D' and '0x0A' respectively, so you want:

"\r\n"

Single quoted strings, on the other hand, only know the escape sequences \\ and \'.

So unless you concatenate the single quoted string with a line break generated elsewhere (e. g., using double quoted string "\r\n" or using chr function chr(0x0D).chr(0x0A)), the only other way to have a line break within a single quoted string is to literally type it with your editor:

$s = 'some text before the line break
some text after';

Make sure to check your editor for its line break settings if you require some specific character sequence (\r\n for example).

Ref : https://bit.ly/3hcyege