RegexTest.php

<?php



// --- standard template vars



$buffer = '{ $data } some test data { $test } { $test_var } { $test_var-value }';

echo 'TEMPLATE: ' . PHP_EOL . $buffer . PHP_EOL . PHP_EOL;
$buffer = preg_replace('#\{ \$([a-zA-Z0-9_]*) \}#', '<?php $t->fV(\'$1\'); ?>', $buffer);
echo 'RAW PHP: ' . PHP_EOL . cleanBuffer($buffer) . PHP_EOL . PHP_EOL;



// --- blocks



$buffer = '{ start block_name as @alias } blah blah blah { @alias:var } { $normal_var } zomgblaaaaaaaaaarrrrgh { end @alias }';

echo 'TEMPLATE: ' . PHP_EOL . $buffer . PHP_EOL . PHP_EOL;

$buffer = preg_replace(array('#\{ start ([a-zA-Z0-9_]*) as @([a-zA-Z0-9_]*) \}#', '#\{ end @([a-zA-Z0-9_]*) \}#', '#\{ @([a-zA-Z0-9_]*)\:([a-zA-Z0-9_]*) \}#'), array('<?php $t->sB(\'$1\'); while(($$2 = $t->fB(\'$1\')) !== false): ?>', '<?php endwhile; ?>', '<?php (if(isset($$1[\'$2\'])) ? $$1[\'$2\'] : NULL) ?>'), $buffer);
$buffer = preg_replace('#\{ \$([a-zA-Z0-9_]*) \}#', '<?php $t->fV(\'$1\'); ?>', $buffer);
echo 'RAW PHP: ' . PHP_EOL . cleanBuffer($buffer) . PHP_EOL . PHP_EOL;



// --- if statements



$buffer = '{ if $test_var == \'string\' } some variable { endif } { if @alias:var == 3 } cake { endif }';

echo 'TEMPLATE: ' . PHP_EOL . $buffer . PHP_EOL . PHP_EOL;
// requires multiple passes
$buffer = preg_replace(array('#\{ if ([\$a-zA-Z0-9_\'\"@:]*) (\=\=|\!\=) ([\$a-zA-Z0-9_\'\"@:]*) \}#', '#\{ endif \}#'), array('<?php if(%$1% $2 %$3%): ?>', '<?php endif; ?>'), $buffer);
$buffer = preg_replace(array('#\%@([a-zA-Z0-9_]*)\:([a-zA-Z0-9_]*)\%#', '#\%\$([a-zA-Z0-9_]*)\%#', '#\%([a-zA-Z0-9_\'\"]*)\%#'), array('(if(isset($$1[\'$2\'])) ? $$1[\'$2\'] : NULL)', '$t->fV(\'$1\')', '$1'), $buffer);
echo 'RAW PHP: ' . PHP_EOL . cleanBuffer($buffer) . PHP_EOL . PHP_EOL;


function cleanBuffer($buffer)
{
	return $buffer;
	/*return str_replace('?> <?php ', '', $buffer);*/
}

stdout

obsidian@lithion-mint ~/Documents $ php RegexTest.php 
TEMPLATE: 
{ $data } some test data { $test } { $test_var } { $test_var-value }

RAW PHP: 
<?php $t->fV('data'); ?> some test data <?php $t->fV('test'); ?> <?php $t->fV('test_var'); ?> { $test_var-value }

TEMPLATE: 
{ start block_name as @alias } blah blah blah { @alias:var } { $normal_var } zomgblaaaaaaaaaarrrrgh { end @alias }

RAW PHP: 
<?php $t->sB('block_name'); while(($alias = $t->fB('block_name')) !== false): ?> blah blah blah <?php (if(isset($alias['var'])) ? $alias['var'] : NULL) ?> <?php $t->fV('normal_var'); ?> zomgblaaaaaaaaaarrrrgh <?php endwhile; ?>

TEMPLATE: 
{ if $test_var == 'string' } some variable { endif } { if @alias:var == 3 } cake { endif }

RAW PHP: 
<?php if($t->fV('test_var') == 'string'): ?> some variable <?php endif; ?> <?php if((if(isset($alias['var'])) ? $alias['var'] : NULL) == 3): ?> cake <?php endif; ?>