Question

我有一个定义为$ array [colname]的数组。对于$ array [colname]中的每个值，我想在最后添加一段文本。里面的值是字符串，我也会附加一个字符串。

Answer 1

至少有两种可能性

编辑阵列：

foreach($a as &$v) {
  $v .= 'APPENDED';
}

或

foreach($a as $k => $v) {
  $a[$k] = $v . 'APPENDED';
}

按mapping创建一个新数组，将旧值设为新值：

$appended_array = array_map(function($v) { return $v . 'APPENDED'; }, $a);

Answer 2

喜欢这个？您可以轻松地迭代通过数组

以下是文档：http://php.net/manual/en/control-structures.foreach.php

提示：下次您应该在google和php.net上进行搜索，因为大多数默认内容都已记录在案，并且在您的问题中，您使用了自己需要的正确关键字

<?php
//Could write this shorter
$array = array(); 
$array['column1'] = 'value1';
$array['column2'] = 'value2';

//This is the short way
//http://php.net/manual/en/language.types.array.php
$array = array('column1' => 'value1', 'column2' => 'value2');

//Iterate throug every value in $array (That is every $array[colname])
//The & charachter before the $value means  pass-by-reference you should do some research to understand this ;)

//foreach($array['colname'] as &$value) {  for a single column with multiple values in it
foreach($array as &$value) {

    // .=  is the same as   $value = $value . 'append'
    // This way we append the text
    $value .= 'append'; 
}
//Outputs all values in $array
print_r($array());
?>

Answer 3

您可以使用如下所示的array_walk：

<?php
$fruits = array("d" => "lemon", "a" => "orange", "b" => "banana", "c" => "apple");

function test_alter(&$item1, $key, $string)
{
    $item1 = "$item1 : $string";
}

array_walk($fruits, 'test_alter', 'fruit');
echo "... and after:\n";

array_walk($fruits, 'test_print');
?>

输出将如下：

... and after:
d. lemon:fruit
a. orange:fruit
b. banana:fruit
c. apple:fruit

了解更多信息：http://php.net/manual/en/function.array-walk.php

Answer 4

此处提供的测试解决方案数组与您的结构匹配

<?php

$array = array();

$array['c1'] = array(1=>'data1', 2=>'data2', 3=>'data3', 4=>'data4');
$array['c2'] = array("d" => "lemon", "a" => "orange", "b" => "banana", "c" => "apple");

echo '<pre> Original Array : <br/>';

print_r($array);

foreach($array as $key=>$value)
{

    foreach($value as $sub_key=>$sub_value)  
    {
        $textToAppend = '_AppendedMe';
        echo '<br/> brfore : '.$value[$sub_key];
        $sub_value .= $textToAppend;


        $array[$key][$sub_key]=$sub_value;

        echo '<br/> after : '.$value[$sub_key];
    }

}
echo '<br/> Array after : ';
print_r($array);
echo '</pre>';
?>

在PHP中追加到关联数组的末尾

4 个答案: