PHP \ newline cannot be output

From the interface json Array , There is a newline in the text part of the array , use json_decode turn php After array , Output in html The page didn't wrap , At first, I thought that the newline symbol was deleted after the array was converted , Later, I tried various methods to replace characters , Finally, we found one CSS style ：

white-space Property specifies how whitespace within an element is handled , The default value is normal（ Blank will be ignored by browser ）

Property value

value	describe
normal	Default . Blank will be ignored by browser .
pre	Blank space will be reserved by browser . It behaves in a similar way HTML Medium <pre> label .
nowrap	Text does not wrap , The text will continue on the same line , Until I met <br> Label until .
pre-wrap	Keep blank sequence , But wrap normally .
pre-line	Merge whitespace sequence , But keep line breaks .
inherit	Rules should be inherited from the parent element white-space The value of the property .

<td style="white-space:pre-wrap">{$vo.content}</td>

After adding this attribute, the line will wrap automatically