Return value of php function_PHP tutorial

Return value of php function. In fact, the PHP function can return one or more values, and the return keyword can be used to return a variable or an array. return causes the program to stop at return and return the specified variable.

Let’s give an example today:

The code is as follows

代码如下	复制代码
'; function she($a,$b,$c) {    return array($c,$b,$a); } list($x,$y,$z)=she(2,3,4); echo '$x='.$x.'$y='.$y.'$z='.$z; ?> 执行结果如： function add($shu) { return $shu+1; } echo add(2).' ‘; function she($a,$b,$c) { return array($c,$b,$a); } list($x,$y,$z)=she(2,3,4); echo ‘$x=’.$x.’ $y=’.$y.’ $z=’.$z; ?> php函

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';
function she($a,$b,$c)
{
Return array($c,$b,$a);
}
list($x,$y,$z)=she(2,3,4);
echo '$x='.$x.'$y='.$y.'$z='.$z;
?>
The execution result is as follows:

代码如下

复制代码

function results($string) { $result = array(); $result[] = $string;//原字符串 $result[] = strtoupper($string);//全部换成大写 $result[] = strtolower($string);//全部换成小写 $result[] = ucwords($string);//单词的首字母换成大写 return $result; } $multi_result = results('The quick brown fox jump over the lazy dog'); print_r($multi_result); ?> 输出结果： Array ( [0] => The quick brown fox jump over the lazy dog [1] => THE QUICK BROWN FOX JUMP OVER THE LAZY DOG [2] => the quick brown fox jump over the lazy dog [3] => The Quick Brown Fox Jump Over The Lazy Dog )

function add($shu)
{
return $shu+1;
}
echo add(2).'
‘;

function she($a,$b,$c)
{
return array($c,$b,$a);
}
list($x,$y,$z)=she(2,3,4);
echo ‘$x=’.$x.’
$y=’.$y.’
$z=’.$z;
?>

php letter

代码如下	复制代码
test(&$a,&$b){    $a = 1000;    $b = 12000;    return $a+$b; } $a = 10; $b = 12; $c = test($a,$b);   //注意这里没有 & 了。 //显示修改后的值 echo $a; echo $b;       echo $c;  //这是函数返回值；

Number, if you want to return multiple return values, how to do it (the function cannot return multiple values, but you can get a similar effect by returning an array.

)

The code is as follows

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function results($string)
{
$result = array();
$result[] = $string;//Original string
$result[] = strtoupper($string);//Change all to uppercase
$result[] = strtolower($string);//Change all to lowercase
$result[] = ucwords($string);//Change the first letter of the word to uppercase return $result;
}
$multi_result = results('The quick brown fox jump over the lazy dog');
print_r($multi_result);
?> Output result:
Array
(
[0] => The quick brown fox jump over the lazy dog ​​
[1] => THE QUICK BROWN FOX JUMP OVER THE LAZY DOG
[2] => the quick brown fox jump over the lazy dog ​​
[3] => The Quick Brown Fox Jump Over The Lazy Dog
) Quote

This function returns three values, one is returned by the function and two are passed by reference.

The code is as follows

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test(&$a,&$b){ $a = 1000; $b = 12000; Return $a+$b; } $a = 10; $b = 12; $c = test($a,$b); //Note that there is no & here. //Show the modified value echo $a; echo $b;  echo $c; //This is the function return value; http://www.bkjia.com/PHPjc/629017.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/629017.htmlTechArticleThe return value of the php function. In fact, the PHP function can return one or more values, and the return keyword can be used to return a variable or an array. return will cause the program to stop at return and return...