PHP foreach爆炸

Question

我是PHP的新手，并试图找出为什么后第一行我有'_'在输出的开始？

$myFile = fopen("sample.txt", "r"); 

while($strBuffer = fgets($myFile, 180)) { 
$strExplode = explode(" ", $strBuffer); 

foreach ($strExplode as $value) { 
    echo $value . "_"; 
} 

输出：

This_is_the_first_test_line. 
_This_is_the_second_test_line. 
_This_is_the_third_test_line._ 

编辑：我现在相信，在数组“行”的最后一个元素是存储换行符..使其打印_在新行

Answer 1

试试这个

$myFile = fopen("sample.txt", "r"); 

while($strBuffer = fgets($myFile)) { 
    $temp= str_replace(" ","_", $strBuffer); 
    echo $temp.'<br>'; 
} 

如果你想使用一个数组 试试这个

$myFile = fopen("sample.txt", "r"); 

while($strBuffer = fgets($myFile)) { 
    $strExplode = explode(" ", $strBuffer); 

     foreach ($strExplode as $value) { 
     if($value>"") 
     echo $value . "_"; 
    }