$arr = array(
1=>array(
'id' => 5,
'name' => '张三'
),
2=>array(
'id' => 6,
'name' => '李四'
)
);

$arr2 = array(
0=>'张三',
1=>'李四'
);

foreach ($arr as $key => $value) {
$arr2[] = $value['name'];
}

$arr2 = array_map('array_shift',$arr);

$arr2 = array_map('reset',$arr);
$arr2 = array_map('end',$arr);

$arr2 = array_reduce($arr, create_function('$result, $v', '$result[] = $v["name"];return $result;'));

$arr2 = array_column($arr, 'name');

<?php
//使用for循环遍历
$arr2=array(array("张三","20","男"),array("李四","25","男"),array("王五","19","女"),array("赵六","25","女"));
echo "<table border=2 bordercolor=red><tr><td>姓名</td><td>年龄</td& gt;<td>性别</td></tr>";
for($i=0;$i<4;$i++){
echo "<tr>";
for($j=0;$j<3;$j++){
  echo "<td>";
  echo $arr2[$i][$j];
  echo "</td>";
}
echo "</tr>";
echo "<br>";
}
echo "</table>";
?>
//使用foreach遍历
<?php
$arr = array('one'=>array('name'=>'张三','age'=>'23','sex'=>'男'),
  'two'=>array('name'=>'李四','age'=>'43','sex'=>'女'),
  'three'=>array('name'=>'王五','age'=>'32','sex'=>'男'),
  'four'=>array('name'=>'赵六','age'=>'12','sex'=>'女'));
foreach($arr as $k=>$val){
  echo $val['name'].$val['age'].$val['sex']."<br>";
}
echo "<p>";
?>
<?php
$arr = array('one'=>array('name'=>'张三','age'=>'23','sex'=>'男'),
  'two'=>array('name'=>'李四','age'=>'43','sex'=>'女'),
  'three'=>array('name'=>'王五','age'=>'32','sex'=>'男'),
  'four'=>array('name'=>'赵六','age'=>'12','sex'=>'女'));
foreach($arr as $key=>$value){
foreach($value as $key2=>$value2){
  echo $value2;
}
echo "<br>";
}
?>