How to remove quotes from strings in php (three methods)

In the PHP language, Quot (quote mark) is a commonly used character, but sometimes we need to remove it. So, how to remove quotation marks in PHP? Here are some methods:

Method 1: Use the str_replace function

The str_replace function can replace specific characters in a string, so we can use it to remove quotes.

For example, if we want to remove the quotation marks in the string $str, we can use the following code:

$str = 'This is a "quoted" string.';
$str = str_replace('"', '', $str);
echo $str; // 输出： This is a quoted string.

In the above code, use the str_replace function to replace the quotation marks in the string and replace it is a null character. This removes the double quotes.

Method 2: Use the preg_replace function

The preg_replace function is used for string replacement based on regular expressions. We can replace quotes in a string using preg_replace function.

For example, if we want to remove single quotes and double quotes in the string $str, we can use the following code:

$str = "This is a 'quoted' string with 'single quotes' and \"double quotes\".";
$str = preg_replace('/(\'|\")/', '', $str);
echo $str; // 输出： This is a quoted string with single quotes and double quotes.

In the above code, we use the preg_replace function and regular expressions to remove characters Quotation marks in the string. The regular expression /(\'|\")/ matches single quotes and double quotes in the string, and then replaces the quotes with null characters.

Method 3: Use the trim function

trim function Used to remove leading and trailing spaces from a string. Although it cannot remove quotes from a string, we can use it in conjunction with the substr function to remove quotes from the beginning and end of a string.

For example, we want to remove To quote the beginning and end of the string $str, you can use the following code:

$str = '"This is a quoted string."';
$str = substr(trim($str, '"'), 1, -1);
echo $str; // 输出：This is a quoted string.

In the above code, use the trim function to remove the double quotes at the beginning and end of the string, and then use the substr function to remove the first character and The last character. This can remove the opening and closing quotation marks.

Summary

The above are three commonly used methods to remove quotation marks in PHP. According to actual needs, we can choose the one that suits us method to remove quotes. For example, if we only need to remove double quotes, using the str_replace function is the simplest method; if we need to remove single quotes and double quotes, using the preg_replace function can meet the needs; and if we only need to remove the beginning and end of the string For quotation marks, you can use the trim and substr functions.

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