[英]PHP Search multidimensional associative array by key and return key => value
[英]Search Associative Array for Key/Value Match - PHP
如何检查在$ needles中找到的键/值对是否在关联数组$ haystack中 ,如果是,则将子数组追加到$ haystack中吗?
正在搜索并建立数组
$haystack = Array
(
[0] => Array
(
[animal] => 'monkey'
)
[1] => Array
(
[animal] => 'lion'
)
[2] => Array
(
[animal] => 'monkey'
)
)
)
数组被循环通过
$needles = = Array
(
[0] => Array
(
[animal] => 'monkey'
)
)
[1] => Array
(
[animal] => 'ape'
)
)
[3]...[99]
)
工作选项---需要更有效的方法
foreach( $needles as $needle ){
if(count($haystack)){
$have_record = false;
foreach( $haystack as $h ){
if( $needle['animal'] === $h['animal'] ) {
$have_record = true;
break;
}
}
if(!$have_record)
array_push( $haystack, array( 'animal' => $needle['animal']) );
} else {
array_push( $haystack, array( 'animal' => $needle['animal']) );
}
}
用这个
function find_key_value($array, $key, $val)
{
foreach ($array as $item)
{
if (is_array($item))
{
find_key_value($item, $key, $val);
}
if (isset($item[$key]) && $item[$key] == $val) return true;
}
return false;
}
print_r(find_key_value($array, 'animal', 'monkey'));
试试这个
<?php
$haystack=array(0=>array('animal'=>'monkey'),array('animal'=>'loin'),array('animal'=>'monkey'));
$needles =array(0=>array('animal'=>'monkey'));
echo $r=isMatch($haystack,$needles);
function isMatch($haystack,$needles){
$haystack_val=array_column($haystack, 'animal');
$needles_val=array_column($needles, 'animal');
$result=array_diff($haystack_val,$needles_val);
if(count($result) > 0){
return "false";
}else
return "true";
}
?>
foreach($needles as $i => $needle){
if(isset($needle['animal']) && isset($haystack[$i]['animal']) && ($needle['animal']==$haystack[$i]['animal']) ) {
//put your required code
}
}
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.