Location: PHPKode > scripts > ID3 > example.php
<?php 
//This is an example usage of Guitar Chord API class from http://pargitaru.co.cc/api/
//this example generates three forms
//First one for searching for standart chords based on chord name and/or modification
//Second one for searching for special chords based on chord name
//Third one is for searching standart and special chords by specifying string and fret

include("./chord.php");
$chord = new chords();

//*------using arrays to genereat standart chord form example-----*/
if(isset($_POST['from_select']))
{
	//setting chord name, empty values will be ignored
	$chord->set_chord($_POST['chord']);
	//setting chord modification, empty values will be ignored
	$chord->set_modification($_POST['modf']);
	//requesting json data, json is a default data output format, so no need pass it as a parameter(here just for example)
	//to get xml data use $chord->request("xml");
	$chord_data = json_decode($chord->request("json"), true);
	//getting errors
	$errors = $chord->get_errors();
	//checking if there are any error
	if(!empty($errors))
	{
		foreach($errors as $error)
		{
			echo "<p>".$error."</p>";
		}
	}
	else
	{
		foreach($chord_data['chords'] as $ch)
		{
			echo "<p>".$ch['chord'].$ch['modf'].": ";
			foreach($ch as $key => $val)
			{
				if(!in_array($key, array("chord", "modf")))
				{
					echo $val." ";
				}
			}
			echo "</p>";
		}
	}
}
echo "<p>Search for chords and modifications:</p>";
echo "<form action='' method='post'>";
$chord_arr = $chord->get_chords();
echo "<select name='chord'>";
echo "<option value=''>--</option>";
foreach($chord_arr as $val)
{
	echo "<option value='".$val."'>".$val."</option>";
}
echo "</select>";
$modf_arr = $chord->get_modifications();
echo "<select name='modf'>";
echo "<option value=''>--</option>";
foreach($modf_arr as $val)
{
	echo "<option value='".$val."'>".$val."</option>";
}
echo "</select>";
echo "<input type='hidden' name='from_select' value='true'/>";
echo "<input type='submit' value='Find'/>";
echo "</form>";
/*-----------------------------------------------------------------------------*/

//*------using arrays to genereat special chord form example-----*/
if(isset($_POST['from_select_sp']))
{
	//setting chord name, empty values will be ignored
	//true specifies that this is a special chord
	$chord->set_chord($_POST['chord'], true);
	//requesting json data, json is a default data output format
	$chord_data = json_decode($chord->request(), true);
	//getting errors
	$errors = $chord->get_errors();
	//checking if there are any error
	if(!empty($errors))
	{
		foreach($errors as $error)
		{
			echo "<p>".$error."</p>";
		}
	}
	else
	{
		foreach($chord_data['chords'] as $ch)
		{
			echo "<p>".$ch['chord'].": ";
			foreach($ch as $key => $val)
			{
				if(!in_array($key, array("chord", "modf")))
				{
					echo $val." ";
				}
			}
			echo "</p>";
		}
	}
}
echo "<p>Search for special chords:</p>";
echo "<form action='' method='post'>";
$chord_arr = $chord->get_specials();
echo "<select name='chord'>";
echo "<option value=''>--</option>";
foreach($chord_arr as $val)
{
	echo "<option value='".$val."'>".$val."</option>";
}
echo "</select>";
echo "<input type='hidden' name='from_select_sp' value='true'/>";
echo "<input type='submit' value='Find'/>";
echo "</form>";
/*-----------------------------------------------------------------------------*/

//*------Searching for chords by strings and frets-----*/
if(isset($_POST['by_string']))
{
	//setting strings to search for standart chords
	$chord->set_strings($_POST['strings']);
	//requesting json data, json is a default data
	$chord_data = json_decode($chord->request(), true);
	//getting errors
	$errors = $chord->get_errors();
	//checking if there are any error
	if(!empty($errors))
	{
		echo "<p>Standart chord errors:</p>";
		foreach($errors as $error)
		{
			echo "<p>".$error."</p>";
		}
	}
	else
	{
		echo "<p>Standart chord results:</p>";
		foreach($chord_data['chords'] as $ch)
		{
			echo "<p>".$ch['chord'].$ch['modf'].": ";
			foreach($ch as $key => $val)
			{
				if(!in_array($key, array("chord", "modf")))
				{
					echo $val." ";
				}
			}
			echo "</p>";
		}
	}
	
	//reset all data to default values
	$chord->reset();
	
	//setting strings to search for special chords
	$chord->set_strings($_POST['strings'], true);
	//requesting json data, json is a default data 
	$chord_data = json_decode($chord->request(), true);
	//getting errors
	$errors = $chord->get_errors();
	//checking if there are any error
	if(!empty($errors))
	{
		echo "<p>Special chord errors:</p>";
		foreach($errors as $error)
		{
			echo "<p>".$error."</p>";
		}
	}
	else
	{
		echo "<p>Special chord results:</p>";
		foreach($chord_data['chords'] as $ch)
		{
			echo "<p>".$ch['chord'].": ";
			foreach($ch as $key => $val)
			{
				if(!in_array($key, array("chord", "modf")))
				{
					echo $val." ";
				}
			}
			echo "</p>";
		}
	}
}
echo "<p>Search for chords by frets:</p>";
echo "<form action='' method='post'>";
$arr = array("e", "b", "g", "D", "A", "E");
foreach($arr as $val)
{
	echo "<p>".$val.": <input type='text' name='strings[]' size='2'/></p>";
}
echo "<input type='hidden' name='by_string' value='true'/>";
echo "<input type='submit' value='Find'/>";
echo "</form>";
/*-----------------------------------------------------------------------------*/

	
?>
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