w3resource

PHP: settype() function

Description

The settype() function is used to set the type of a variable.

Version:

(PHP 4 and above)

Syntax:

settype(var_name, var_type)

Parameters:

Name Description Required /
Optional
Type
var_name The variable being converted. Required Mixed*
var_type Type of the variable. Possible values are : boolean, integer, float, string, array, object, null. Optional String

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

Return value:

TRUE on success or FALSE on failure.

Value Type: Boolean.

Example:

<?php
$var1='98';
$var2='01';
settype($var1, "integer");
settype($var2, "integer");
echo ($var1.'<br>');
echo ($var2.'<br>');
echo ($var1+$var2.'<br>');
?>

Output:

98
1
99

View the example in the browser

Practice here online :

See also

PHP Function Reference

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Next: strval



PHP: Tips of the Day

PHP: Using str_replace so that it only acts on the first match?

Can be done with preg_replace:

function str_replace_first($from, $to, $content)
{
    $from = '/'.preg_quote($from, '/').'/';

    return preg_replace($from, $to, $content, 1);
}

echo str_replace_first('abc', '123', 'abcdef abcdef abcdef'); 
// outputs '123def abcdef abcdef'

The magic is in the optional fourth parameter [Limit]. From the documentation:

[Limit] - The maximum possible replacements for each pattern in each subject string. Defaults to -1 (no limit).

Ref : https://bit.ly/35SCuP8