試圖添加按字母順序排序的列表文字第一個字母將會改變

Question

我按字母順序排列了一個列表和數據庫mysql的數據。要讀取我使用foreach循環的數據。現在，我想要當第一個字母（a-> b- > c）將改變一個分隔符將被添加在'A'字符列表之後等等。

代碼：

$result = mysqli_query($con,"SELECT * FROM pages order by name ASC"); 
foreach($result as $val){ 
    echo $val['name']."<br>"; echo "<hr></hr>"; 
} 

在此先感謝

Answer 1

<?php 
$first = ''; 
$result = mysqli_query($con,"SELECT * FROM pages order by name ASC"); 
foreach($result as $val){ 

    $first = substr($val['name'], 0, 1); 

    if ($first != $prev){ 
     echo '<h1>'.$first.'</h1>'; 
    } 

    echo $val['name']."<br>"; 

    $prev = $first; 
} 

Answer 2

試試這個：

$result = mysqli_query($con,"SELECT * FROM pages order by name ASC"); 

$lastChar = "?"; //initialization 

foreach($result as $val){ 
    if($lastChar != $val['name'][0]){  
    echo $val['name'][0].'<BR>';  //separator 
    } 
    echo $val['name']."<br>"; echo "<hr></hr>"; 
    $lastChar = $val['name'][0];   //update 
} 

Answer 3

$char = 'a'; 
foreach($result as $val) { 
    $newChar = substr($val['name'],0,1); 
    if ($newChar != $char) { 
    $char = $newChar; 
    echo "seperator for new character"; 
    } 
    //do your other stuff 
} 

這是你想要做什麼？

Answer 4

試試這個（未測試的代碼）：

$firstLetter = 'A'; 
foreach($result as $val) { 
    $ch = substr($val['name'],1,1); 
    if($ch != $firstLetter) { 
    echo "<hr>"; 
    $firstLetter = $ch; 
    } 
    echo $val['name']."<br>"; 
}