PHP uses the trim function to remove left and right spaces and special characters from a string.

The example in this article describes how PHP uses the trim function to remove left and right spaces and special characters from a string. Share it with everyone for your reference, the details are as follows:

The trim() function in PHP is defined as follows:

trim(string,charlist)

The parameter description is as follows:

string required. Specifies the string to check.

charlist

Optional. Specifies which characters are removed from the string. If omitted, all following characters are removed:
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