insert-coin/res/library/file.php

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PHP
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<?php
// FILEPATH URL --> RELATIVE_PATH
// SIDE-EFFECT: Written redirect PHP to filepath
// Create a simple PHP redirection file at $filepath to $url;
// return the relative path to it.
function write_alias($filepath, $url)
{
$file_p = fopen($filepath, 'w');
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$redirect_string = "<?php header('Location: " . $url . "'); ?>\n";
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if (fwrite($file_p, $redirect_string)) {
fclose($file_p);
return $filepath;
}
else {
return 0;
}
}
// FILEPATH SOURCE_STRING --> RELATIVE_PATH
// SIDE-EFFECT: Written metadata TXT at $filepath.txt
// Create a metadata file for set path;
// return the relative path to it.
function write_metadata($filepath, $source)
{
if (empty($source)) {
$source = "[citation needed]";
}
$file_p = fopen($filepath . ".txt", 'w');
$source_string = "Source:\n"
. prefix_text(set_line_length($source, 50),
" ");
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if (fwrite($file_p, $source_string)) {
fclose($file_p);
return $source_string;
}
else {
return 0;
}
}
// FILENAME --> FILE_EXTENSION
// Return the file-extension of a filename.
function file_extension($file_name)
{
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return strtolower(pathinfo($file_name, PATHINFO_EXTENSION));
}
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// FILENAME --> BOOLEAN
// Return whether or not a filename has an 'image' file-extension
function is_image($file_name)
{
$file_ext = file_extension($file_name);
if (in_array(($file_ext), array("jpg", "jpeg", "jpg", "png"))) {
return 1;
} else {
return 0;
}
}
?>