16c05-1.php

来自「介绍PHP5的给类型函数应用」· PHP 代码 · 共 32 行

<?php
// A function that will protect email addreses, by generating JavaScript, 
//  which will in turn generate the Email Link!
function write_protected_email($address) {
    // Generate the full link:
    $link = "<a href=\"mailto:{$address}\">{$address}</a>";
    
    // Loop through the string, creating an array of codes:
    $codes = array();
    for ($i = 0; $i < strlen($link); $i++) {
        // Use 'ord' to convert the character to it's ascii value
        $codes[] = ord($link{$i});
    }
    
    // Ok, now echo out the JavaScript needed to recreate.
    // Essentially is just the array, and a loop to print it out:
    // Make the array first:
    $outputarray = implode(',', $codes);
    
    // Now echo it and we are done.
    echo "
<script>
var datapoints = new Array({$outputarray});
for (var i = 0; i < datapoints.length; i++)
  { document.write(String.fromCharCode(datapoints[i])); }
</script>
";
}

// Test this to see if it works:
write_protected_email('[e-mail]');
?>