Calling a JavaScript function from PHP

Calling a JavaScript function from PHP

This Gist is for the "Calling a JavaScript function from PHP" example at http://www.hoverdroids.com/2015/06/10/calling-a-javascript-function-from-php/

JavaScriptFunctionWithArrayParameter.php

<?php
echo "<a href='http://www.hoverdroids.com/2015/06/10/calling-a-javascript-function-from-php/'>Full example at: http://www.hoverdroids.com/2015/06/10/calling-a-javascript-function-from-php/</a>";
echo "<p>Add whatever PHP you want here...</p>";

$myname = 'MyName';
$yourname = 'YourName';

//Data that is going to be passed into the JavaScript function. Try to keep all vars together so
//that it's easier to track down the php/javascript interaction
$jsdata = array(
				'input' => $myname,
				'array_input' => array(
										'name' => $yourname
				),
);
?>
<!--This JS can be here or a separate file since all it's doing is defining a function in the JS space'-->
<script>
	function callAlert(text){
		alert(text);
	}
</script>
<!--This JS must be defined with the php since it's using previously defined php variables -->
<script>
	var JSDATA = <?=json_encode($jsdata, JSON_HEX_TAG | JSON_HEX_AMP )?>;
	
	//Prompt using a single var in the array
	callAlert(JSDATA.input);
	
	
	//Prompt using a var from a nested array	
	callAlert(JSDATA.array_input.name);
</script>
<?php
?>

JavaScriptFunctionWithoutParameters.php

<?php
echo "<a href='http://www.hoverdroids.com/2015/06/10/calling-a-javascript-function-from-php/'>Full example at: http://www.hoverdroids.com/2015/06/10/calling-a-javascript-function-from-php/</a>";
echo "<p>Add whatever PHP you want here...</p>";
?>
<!--This JS function can be defined here or a separate file since so long as it gets created in JS space'-->
<script>
	function callAlert(){
		alert('A alert without a parameter');
	}
</script>
<script>
	callAlert();
</script>
<?php
?>

JavaScriptFunctionWithSingleParameter.php

<?php
echo "<a href='http://www.hoverdroids.com/2015/06/10/calling-a-javascript-function-from-php/'>Full example at: http://www.hoverdroids.com/2015/06/10/calling-a-javascript-function-from-php/</a>";
echo "<p>Add whatever PHP you want here...</p>";
 
//Data that is going to be passed into the JavaScript function. Try to keep all vars together so
//that it's easier to track down the php/javascript interaction
$jsdata = 'MyName';
?>
<!--This JS can be here or a separate file since all it's doing is defining a function in the JS space'-->
<script>
	function callAlert(text){
		alert(text);
	}
</script>
<!--This JS must be defined with the php since it's using previously defined php variables -->
<script>
	var JSDATA = <?=json_encode($jsdata, JSON_HEX_TAG | JSON_HEX_AMP )?>;
	
	//Prompt using a single var
	callAlert(JSDATA);
</script>
<?php
?>