w3resource

PHP : debug_zval_dump() function

Description

The debug_zval_dump() function is used to dump a string representation of an internal zend value to output.

Version:

(PHP 4 and above)

Syntax:

debug_zval_dump (var_name)

Parameter:

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

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

Return value:

No value is returned.

Example:

<?php
$var_name1='w3resource.com';
$var_name2='';
$var_name2=& $var_name1;
debug_zval_dump(&$var_name1);
?>

Output:

&string(14) "w3resource.com" refcount(3)

View the example in the browser

Practice here online :

See also

PHP Function Reference

Previous: Installing and configuring PHP Variable Handling
Next: doubleval



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