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Template engine with fragments.
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| <?php | |
| /** | |
| * Use | |
| * <?= fragment_start('this_is_my_fragment') ?> | |
| * Fragment content <?= $with_variables_and_stuff ?> | |
| * <?= fragment_end('this_is_my_fragment') ?> | |
| */ | |
| /** | |
| * Parses a php view to a HTML string | |
| * @param $path - relative path to the view | |
| * @param $data array ['name' => 'Peter'] | |
| * @param null $fragmentName If you specify a fragment name this function will return only the fragment. Will throw error if the fragment is not found. | |
| * @return string the parsed HTML | |
| * @throws Exception | |
| */ | |
| function parseView($path, $data, $fragmentName = null) { | |
| if($fragmentName){ | |
| global $__nrj__fragment__name__; | |
| $__nrj__fragment__name__ = 'this_is_my_fragment'; | |
| $fragmentStartString = fragment_start($fragmentName); | |
| $fragmentEndString = fragment_end($fragmentName); | |
| } | |
| ob_start(); | |
| extract($data); | |
| include ($path); | |
| $result = ob_get_clean(); | |
| // if user wants a fragment try to "cut out" the fragment out of the | |
| // whole view | |
| if($fragmentName) { | |
| // position of the first letter of the Start Fragment / (or End Fragment) | |
| // "abc x{fragmentStart:this_is_my_fragment}x " position will be 4 "abc " are 4 symbols | |
| $fragment_start_position = stripos($result, $fragmentStartString ); | |
| $fragment_end_position = stripos($result, $fragmentEndString); | |
| if($fragment_start_position === false){ | |
| throw new Exception( | |
| "Start for fragment: '$fragmentName' was not defined in the template: ".$path); | |
| } | |
| if($fragment_end_position === false){ | |
| throw new Exception( | |
| "End for fragment: '$fragmentName' was not defined in the template: ".$path); | |
| } | |
| $end_of_start_string = $fragment_start_position + mb_strlen($fragmentStartString); | |
| $fragment_substring = substr($result, $end_of_start_string, | |
| $fragment_end_position - $end_of_start_string); | |
| if(!$fragment_substring) { | |
| throw new Exception("Failed to extract fragment"); | |
| } | |
| $result = $fragment_substring; | |
| } | |
| return $result; | |
| } | |
| /** | |
| * generate a fragment name tag if there is a fragment | |
| * @param $name | |
| * @return string | |
| */ | |
| function fragment_start($name) { | |
| global $__nrj__fragment__name__; | |
| if(($__nrj__fragment__name__)) { | |
| return 'xxx{fragmentStart:'.$name.'}xxx'; | |
| } | |
| return ''; | |
| } | |
| function fragment_end($name) { | |
| global $__nrj__fragment__name__; | |
| if(isset($__nrj__fragment__name__)) { | |
| return 'xxx{fragmentEnd:' . $name . '}xxx'; | |
| } | |
| return ''; | |
| } | |
| echo parseView('./view1.php', | |
| ['name' => 'World'], | |
| 'this_is_my_fragment'); |
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| <html> | |
| <head><title></title></head> | |
| <body> | |
| abc <?= "Hello there, dear $name!"; ?> | |
| <?= fragment_start('this_is_my_fragment') ?> | |
| This is a fragment, dear <?= $name ?>! | |
| <?= fragment_end('this_is_my_fragment') ?> | |
| </body> | |
| </html> | |
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without fragments:
with fragments:
