8 PHP 5 echo and print statements

In PHP, there are two basic output methods: echo and print.

PHP echo and print statements

Difference between echo and print:

<code>echo - 能够输出一个以上的字符串
print - 只能输出一个字符串，并始终返回 1
</code>

Tip: echo is slightly faster than print because it does not return any value.

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PHP echo statement

echo is a language structure, which can be used with or without parentheses: echo or echo().
Displaying strings

The following example shows how to use the echo command to display different strings (please also note that strings can contain HTML tags):

<code><span><span><?php</span><span>echo</span><span>"<h2>PHP is fun!</h2>"</span>;
<span>echo</span><span>"Hello world!<br>"</span>;
<span>echo</span><span>"I'm about to learn PHP!<br>"</span>;
<span>echo</span><span>"This"</span>, <span>" string"</span>, <span>" was"</span>, <span>" made"</span>, <span>" with multiple parameters."</span>;
<span>?></span></span></code>

The following example shows how to use the echo command to display strings and variables:

<code><span><?php</span><span>$txt1</span>=<span>"Learn PHP"</span>;
<span>$txt2</span>=<span>"W3School.com.cn"</span>;
<span>$cars</span>=<span>array</span>(<span>"Volvo"</span>,<span>"BMW"</span>,<span>"SAAB"</span>);

<span>echo</span><span>$txt1</span>;
<span>echo</span><span>"<br>"</span>;
<span>echo</span><span>"Study PHP at $txt2"</span>;<span>// 单引号解析不了变量$</span><span>echo</span><span>"My car is a {$cars[0]}"</span>;
<span>?></span></code>

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PHP print statement

print is also a language structure and can be used with or without parentheses: print or print().
Displaying strings

The following example shows how to use the print command to display different strings (please also note that strings can contain HTML tags):

<code><span><span><?php</span><span>print</span><span>"<h2>PHP is fun!</h2>"</span>;
<span>print</span><span>"Hello world!<br>"</span>;
<span>print</span><span>"I'm about to learn PHP!"</span>;
<span>?></span></span></code>

Display variables

The following example shows how to use the print command to display characters String and variable:

<code><span><?php</span><span>$txt1</span>=<span>"Learn PHP"</span>;
<span>$txt2</span>=<span>"W3School.com.cn"</span>;
<span>$cars</span>=<span>array</span>(<span>"Volvo"</span>,<span>"BMW"</span>,<span>"SAAB"</span>);

<span>print</span><span>$txt1</span>;
<span>print</span><span>"<br>"</span>;
<span>print</span><span>"Study PHP at $txt2"</span>;
<span>print</span><span>"My car is a {$cars[0]}"</span>;
<span>?></span></code>

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