這個變量回聲是怎麼來的16？

Question

$body = "Artist: " + $artist + "Size: " + $size + "Time: " + $time + "Concept: " + $concept + "Time: " + $time + "Mod: " + $mod + "Details: " + $details; 

當我嘗試回顯這個變量時，所有出來的都是'16'。

你們能幫忙嗎？

Answer 1

PHP中的連接運算符是.不是+

$body = "Artist: " . $artist . "Size: " . $size . "Time: " . $time . "Concept: " . $concept . "Time: " . $time . "Mod: " . $mod . "Details: " . $details; 

Answer 2

在PHP連接運算符是.，不+

所以：

$body = "Artist: " . $artist . "Size: " . $size . "Time: " . $time . "Concept: " . $concept ."Time: " . $time . "Mod: " . $mod . "Details: " . $details;