PHP--froeach语句

foreach循环结构语法最擅长循环处理数组，从数组中提取每个”键/值”对，直到获得所有项，或满足某些内部条件为止。

1.从数组中获取每个值

foreach(array_expr as $value){    statement}

eg:

<?php     $links = array("www.apress.com","www.php.net","www.apache.org");    foreach($links as $link){        echo $link;    }?>

2.处理包含键和值的数组

foreach(array_expr as $key => $value){    statement}

eg:

<?php     $links = array("The Apache Web Server"=>"www.apache.org",        "Apress"=>"www.apress.com","The PHP"=>"www.php.net");    foreach($links as $title=>$link){        echo "<a href=\"http://$link\">$title</a><br/>";    }?>