in_array() 查找数组值是否存在案例分享

in_array(value,array,type)

<?php $people = array("Peter", "Joe", "Glenn", "Cleveland");
if (in_array("Glenn",$people)) { echo "Match found"; } else { echo "Match not found"; } ?>

<?php $people = array("Peter", "Joe", "Glenn", "Cleveland", 23);
if (in_array("23",$people, TRUE)
)
{ 
echo "Match found<br />"; 
} 
else 
{ 
echo "Match not found<br />"; 
}if (in_array("Glenn",$people, TRUE)) 
{ 
echo "Match found<br />"; 
} 
else 
{ 
echo "Match not found<br />"; 
}if (in_array(23,$people, TRUE)) 
{ 
echo "Match found<br />"; 
} 
else 
{ 
echo "Match not found<br />"; 
} 
?>
输出： 
Match not found 
Match found 
Match found