How to remove quotes before and after a string in php

php method to remove quotes before and after a string: first determine whether the string begins with a quote; then use the substr() function to return the rest of the string; then determine whether the string ends with a quote; finally use substr again () function returns the rest of the string.

The substr() function returns the extracted portion of the string, FALSE if failed, or an empty string.

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Syntax:

substr(string,start,length)

Note: If the start parameter is a negative number and length is less than or equal to start, Then length is 0.

Parameters:

• string Required. Specifies a part of the string to be returned.​

• #start Required. Specifies where in the string to begin.

• #length Optional. Specifies the length of the string to be returned. The default is until the end of the string.

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php code:

function remove_quote(&$str) {
        if (preg_match("/^\"/",$str)){
            $str = substr($str, 1, strlen($str) - 1);
        }
        //判断字符串是否以'"'结束
        if (preg_match("/\"$/",$str)){
            $str = substr($str, 0, strlen($str) - 1);;
        }
        return $str;
  }

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