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<?php function test( $input) { $doc = new DOMDocument; $doc->loadHTML( $input); $p = $doc->getElementsByTagName('p')->item(0); $children = $p->childNodes; $img_found = false; $error = false; foreach( $children as $child) { if( $child->nodeType == XML_TEXT_NODE && !$img_found) { // Text before the image, OK, continue on continue; } if( $child->nodeType == XML_ELEMENT_NODE) { if( !($child->tagName == 'img')) { // echo "Invalid HTML element found"; $error = true; } else { $img_found = true; } } else { // echo "Invalid node type!"; $error = true; } } if( $img_found && !$error) { echo 'ok' . "\n"; } else { echo 'NOT ok' . "\n"; } } $input = '<p><img src="#" /></p>'; // ok test( $input); $input = '<p><img src="#" /><img src="#" /></p>'; // ok test( $input); $input = '<p>xxx<img src="#" /></p>'; // ok test( $input); $input = '<p><img src="#" />xxx</p>'; // NOT ok test( $input);
Output for 5.0.0 - 5.6.3, php7@20140507 - 20141101, hhvm-3.0.1 - 3.4.0
ok ok ok NOT ok
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_OBJECT_OPERATOR in /in/s468l on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected T_OBJECT_OPERATOR in /in/s468l on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/s468l on line 5
Process exited with code 255.