The concatenation operator for strings in php is

The operator for concatenating strings in PHP is dot (.), which concatenates two string values ​​together to form a new string, applicable to any string value, and the connection result is a new character String has higher priority than the assignment operator. It can be used to connect multiple strings continuously, and can also connect strings with other data types (non-string values ​​will be converted to strings).

String concatenation operator in PHP

The operator used to concatenate strings in PHP is dot ( .). It concatenates two string values ​​together to form a new string.

The syntax of this operator is as follows:

<code>$new_string = $string1 . $string2;</code>

Example:

$str1 = "你好";
$str2 = "世界";

$new_str = $str1 . $str2;

// 输出：你好世界
echo $new_str;

A few points to note:

• The dot operator works with any string value.
• The result of the concatenation will be a new string, rather than modifying the original string.
• The dot operator has higher precedence than the assignment operator (=), which means $new_str = $str1 $str2; will result in a syntax error.
• The dot operator can be used continuously to connect multiple strings. For example, $str3 = $str1 . $str2 . "!" will create a new string containing three concatenated strings.
• The dot operator can also be used to concatenate strings with other data types, such as numbers or Boolean values. In this case, non-string values ​​will be converted to strings.

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