>我在下面有一个这样的关联数组：
<?php
$first = array(
array('lastexam' => '170220', 'nextexam' => '170220', 'phone' => '170220', 'fax' => '170220'),
array('lastexam' => '170220', 'nextexam' => '170220', 'phone' => '170220', 'fax' => '170220'),
array('lastexam' => '170221', 'nextexam' => '170220', 'phone' => '170224', 'fax' => '170220'),
array('lastexam' => '170221', 'nextexam' => '170226', 'phone' => '170220', 'fax' => '170220'),
array('lastexam' => '170222', 'nextexam' => '170220', 'phone' => '170225', 'fax' => '170220')
);
?>
我需要比较$first[0]值$first[1]、$first[1]到$first[2]、$first[2]到$first[3]和$first[3]到$first[4]。我需要得到如下结果：
例如：
<?php
array
(
[2] => array
(
[lastexam] => 170221,
[phone] => 170224,
),
[3] => array
(
[nextexam] => 170226,
[phone] => 170220,
),
[4] => array
(
[lastexam] => 170222,
[phone] => 170225,
)
);
?>
我认为这将解决您的问题
<?php
$first = array(
array('lastexam' => '170220', 'nextexam' => '170220', 'phone' => '170220', 'fax' => '170220'),
array('lastexam' => '170220', 'nextexam' => '170220', 'phone' => '170220', 'fax' => '170220'),
array('lastexam' => '170221', 'nextexam' => '170220', 'phone' => '170224', 'fax' => '170220'),
array('lastexam' => '170221', 'nextexam' => '170226', 'phone' => '170220', 'fax' => '170220'),
array('lastexam' => '170222', 'nextexam' => '170220', 'phone' => '170225', 'fax' => '170220')
);
$pre = array();
$cur = array();
$tmp = array();
echo '<pre>'; print_r($first); echo '</pre>';
foreach($first as $key => $val) {
foreach ($val as $key1 => $val1) {
$cur[$key1] = $val1;
if (isset($pre[$key1]) && $pre[$key1] !== $cur[$key1]) {
$tmp[$key][$key1] = $val1;
}
$pre[$key1] = $val1;
}
}
echo '<pre>'; print_r($tmp); echo '</pre>';
?>
如果是这样，请在下面点赞或评论
我发现按照布拉德·肯特在评论中的建议使用array_diff要干净得多。
$result = [];
for ($i = count($first)-1; $i >= 1; $i--) {
$diff = array_diff($first[$i], $first[$i-1]);
if (!empty($diff))
$result[$i] = $diff;
}
这是您要搜索的一点点吗？
$first = array(
array('lastexam' => '170220', 'nextexam' => '170220', 'phone' => '170220', 'fax' => '170220'),
array('lastexam' => '170220', 'nextexam' => '170220', 'phone' => '170220', 'fax' => '170220'),
array('lastexam' => '170221', 'nextexam' => '170220', 'phone' => '170224', 'fax' => '170220')
);
if((array_values($first)[0]['lastexam']) == (array_values($first)[1]['lastexam'])){
var_dump(array_values($first)[2]['lastexam']);
var_dump(array_values($first)[2]['phone']);
} else {
//
echo "whatever..." ;
//
}
？？ 还不完美，因为我没有掌握你想要实现的整体画面。但是有了这个if语句，你至少可以比较你想要比较的内容。祝你好运！。