How to remove the spaces around the numerical values by php

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In PHP, you can use the trim () function to remove spaces around a numeric value, which is used to remove white space characters or other predefined characters on both sides of a string with the syntax "trim (string,charlist)".

Operating environment of this tutorial: windows10 system, PHP7.1 version, DELL G3 computer

How does php remove the spaces around the number?

The trim () function removes white space characters or other predefined characters from both sides of the string.

Related functions:

Ltrim ()-removes white space characters or other predefined characters on the left side of the string.

Rtrim ()-removes white space characters or other predefined characters to the right of the string.

Grammar

Trim (string,charlist)

Parameter description

String is required. Specifies the string to check.

Charlist is optional. Specifies which characters are removed from the string. If this parameter is omitted, all the following characters are removed:

"\ 0"-NULL

"\ t"-Tab character

"\ n"-Line break

"\ x0B"-Vertical Tab

"\ r"-enter

""-Spac

Examples are as follows:

Output result:

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