本文实例讲述了php实现根据字符串生成对应数组的方法,是比较实用的技巧。分享给大家供大家参考。具体方法如下:
先看看如下示例:
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|
<?php
$config = array (
'project|page|index' => 'content' ,
'project|page|nav' => array (
array (
'image' => '1.jpg' ,
'name' => 'home'
),
array (
'image' => '2.jpg' ,
'name' => 'about'
)
),
'project|page|open' => true
);
?>
|
根据$config生成以下数组:
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<?php
$result = array (
'project' => array (
'page' => array (
'index' => 'content' ,
'nav' => array (
array (
'image' => '1.jpg' ,
'name' => 'home'
),
array (
'image' => '2.jpg' ,
'name' => 'about'
)
),
'open' => true
)
)
);
?>
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方法:使用eval实现:
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<?php
$config = array (
'project|page|index' => 'content' ,
'project|page|nav' => array (
array (
'image' => '1.jpg' ,
'name' => 'home'
),
array (
'image' => '2.jpg' ,
'name' => 'about'
)
),
'project|page|open' => true
);
$result = array ();
foreach ( $config as $key => $val ){
$tmp = '' ;
$keys = explode ( '|' , $key );
for ( $i =0, $len = count ( $keys ); $i < $len ; $i ++){
$tmp .= "['" . $keys [ $i ]. "']" ;
}
if ( is_array ( $val )){
eval ( '$result' . $tmp . '=' .var_export( $val ,true). ';' );
} elseif ( is_string ( $val )){
eval ( '$result' . $tmp . '=' . $val . ';' );
} else {
eval ( '$result' . $tmp . '=$val;' );
}
}
print_r( $result );
?>
|
输出结果:
Array
(
[project] => Array
(
[ page ] => Array
(
[index] => content
[nav] => Array
(
[0] => Array
(
[image] => 1.jpg
[name] => home
)
[1] => Array
(
[image] => 2.jpg
[name] => about
)
)
[open] => 1
)
)
)
希望本文所述对大家PHP程序设计的学习有所帮助。