如何设置变量为字符串？

Question

有什么可能使这种使用PHP的东西？

<?php 

$number = 1; 

$str_$number = "BlahBlah"; 

// and make this: $str_1 = "BlahBlah"; 

echo $str_1; 

?> 

Answer 1

<?php 
$number = 1; 
${'str_'.$number} = 'foobar'; 
echo $str_1;//foobar 

Answer 2

尝试

<?php 
$number = 1; 
${'str_' . $number} = 'foobar'; 
?> 

Answer 3

<?php 
$number = 1; 
$value = 'str_' . $number; 
$$value = 'blahblah'; 
echo $str_1; 
?> 

Answer 4

您也可以尝试

$number = 1; 
eval('$str_'.$number.' = "foobar";'); 
echo $str_1;