Can't strings be spliced ​​in php?

Strings in php can be spliced. Two methods of string splicing: 1. Use the string connector "." to splice two or more strings into a new string, the syntax is "$string1.$string2.$string3 ...."; 2. Use the assignment operator ".=" for splicing. You can append the string on the right side of the equation to the end of the string on the left, using the syntax "$string1 .= $string2".

The operating environment of this tutorial: windows7 system, PHP version 8.1, DELL G3 computer

Strings in php can be spliced.

In PHP, you can concatenate two or more strings into a new string.

There are two ways to splice strings in PHP:

• One is to use the string concatenation character .;

• The other is to use the assignment operator .=.

Method 1: Use string concatenation .

String concatenation operator. can concatenate two or more strings into a new string.

There is an example below:

<?php
header("Content-type:text/html;charset=utf-8");
$str1="欢迎来到";
$str2="PHP中文网";
$str3=$str1.$str2;
echo "字符串1：".$str1;
echo "<br>字符串2：".$str2;
echo "<br>字符串1和字符串2拼接后：".$str3;
?>

Output result:

It can be seen that when we use When echo is output, sometimes you need some text prompts. In this case, you can use the string connector . to splice the text strings and variables enclosed in quotation marks together for output, for example "echo "After concatenating string 1 and string 2: ".$str3;".

When using echo to output a string, you can also use curly brackets {$str} to embed variables in the string, such as "Text{$str} Text "; If {} is not used, you can also use word segmentation characters to separate variables and text. Word segmentation characters are generally spaces, punctuation marks, etc.

<?php
header("Content-type:text/html;charset=utf-8");
$str1="欢迎来到";
$str2="PHP中文网";
$str3=$str1.$str2;
echo "字符串1：".$str1;
echo "<br>字符串2：$str2";
echo "<br>字符串1和字符串2拼接后: {$str3}";
?>

Output result:

Method 2: Use assignment operator .=

In PHP, you can use the format of "$string1 .= $string2" to concatenate strings, . The = operator can append the string on the right side of the equation to the end of the string on the left

Let’s take a look at the following example to understand the .= operator.

<?php
header("Content-type:text/html;charset=utf-8");
$str1="欢迎来到";
echo "字符串1：".$str1;

$str2="PHP中文网";
echo "<br>字符串2：".$str2;

$str1.=$str2;
echo "<br>字符串1和字符串2拼接后：".$str1;
?>

Output result:

Recommended learning: "PHP Video Tutorial"

The above is the detailed content of Can't strings be spliced ​​in php?. For more information, please follow other related articles on the PHP Chinese website!