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The print() function outputs one or more strings.
print()函数的作用是:输出字符串。
print(strings) |
Parameter参数 | Description描述 |
---|---|
strings | Required. One or more strings to be sent to the output 必要参数。指定一个或多个发送到结果的字符串 |
Note: The print() function is not actually a function, so you are not required to use parentheses with it.
注意:print()函数并不是一个真正意义上的函数,所以你不一定需要再声明它的时候加上圆括号“()”
Tip: The print() function is slightly slower than echo().
提示:print()函数的运行速度比echo()函数稍慢一些。
<?php $str = "Who's Kai Jim?"; print $str; print "<br />"; print $str."<br />I don't know!"; ?> |
The output of the code above will be:
上述代码将输出下面的结果:
Who's Kai Jim? Who's Kai Jim? I don't know! |
<?php print "This text spans multiple lines."; ?> |
The output of the code above will be:
上述代码将输出下面的结果:
This text spans multiple lines. |
Difference of single and double quotes. Single quotes will print the variable name, not the value:
比较单引号(')和双引号(")的不同点。使用单引号(')输出的是变量名,而不是变量值:
<?php $color = "red"; print "Roses are $color"; print "<br />"; print 'Roses are $color'; ?> |
The output of the code above will be:
上述代码将输出下面的结果:
Roses are red Roses are $color |