Online PHP editor | perf for Ductq

@ 2014-09-17T14:44:14Z

<?php
error_reporting(E_ALL);
class XML {
	var $parser; #a reference to the XML parser
	var $document; #the entire XML structure built up so far
	var $current; #a pointer to the current item - what is this
	var $parent; #a pointer to the current parent - the parent will be an array
	var $parents; #an array of the most recent parent at each level

	var $last_opened_tag;

	function XML($data=null){
		$this->parser = xml_parser_create();

		xml_parser_set_option ($this->parser, XML_OPTION_CASE_FOLDING, 0);
		xml_set_object($this->parser, $this);
		xml_set_element_handler($this->parser, "open", "close");
		xml_set_character_data_handler($this->parser, "data");
#		register_shutdown_function(array(&$this, 'destruct'));
	}

	function destruct(){
		xml_parser_free($this->parser);
	}

	function parse($data){
		$this->document = array();
		$this->parent = &$this->document;
		$this->parents = array();
		$this->last_opened_tag = NULL;
		xml_parse($this->parser, $data);
		return $this->document;
	}

	function open($parser, $tag, $attributes){
		#echo "Opening tag $tag<br>\n";
		$this->data = "";
		$this->last_opened_tag = $tag; #tag is a string
		if(array_key_exists($tag, $this->parent)){
			#echo "There's already an instance of '$tag' at the current level ($level)<br>\n";
			if(is_array($this->parent[$tag]) and array_key_exists(0, $this->parent[$tag])){ #if the keys are numeric
				#need to make sure they're numeric (account for attributes)
				$key = count_numeric_items($this->parent[$tag]);
				#echo "There are $key instances: the keys are numeric.<br>\n";
			}else{
				#echo "There is only one instance. Shifting everything around<br>\n";
				$temp = &$this->parent[$tag];
				unset($this->parent[$tag]);
				$this->parent[$tag][0] = &$temp;

				if(array_key_exists("$tag attr", $this->parent)){
					#shift the attributes around too if they exist
					$temp = &$this->parent["$tag attr"];
					unset($this->parent["$tag attr"]);
					$this->parent[$tag]["0 attr"] = &$temp;
				}
				$key = 1;
			}
			$this->parent = &$this->parent[$tag];
		}else{
			$key = $tag;
		}
		if($attributes){
			$this->parent["$key attr"] = $attributes;
		}

		$this->parent[$key] = array();
		$this->parent = &$this->parent[$key];
		array_unshift($this->parents, &$this->parent);
	}

	function data($parser, $data){
		#echo "Data is '", htmlspecialchars($data), "'<br>\n";
		if($this->last_opened_tag != NULL){
			$this->data .= $data;
		}
	}

	function close($parser, $tag){
		#echo "Close tag $tag<br>\n";
		if($this->last_opened_tag == $tag){
			$this->parent = $this->data;
			$this->last_opened_tag = NULL;
		}
		array_shift($this->parents);
		$this->parent = &$this->parents[0];
	}
}

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

Version	System time (s)	User time (s)	Memory (MiB)
5.4.32	0.023	0.030	19.31
5.4.31	0.030	0.037	19.03
5.4.30	0.023	0.047	19.11
5.4.29	0.020	0.053	18.99
5.4.28	0.037	0.020	18.99
5.4.27	0.027	0.047	18.99
5.4.26	0.017	0.037	19.31
5.4.25	0.000	0.040	18.97
5.4.24	0.010	0.033	19.07
5.4.23	0.017	0.040	19.21
5.4.22	0.030	0.040	18.78
5.4.21	0.023	0.037	18.98
5.4.20	0.020	0.037	18.85
5.4.19	0.027	0.030	18.85
5.4.18	0.017	0.040	18.82
5.4.17	0.030	0.057	18.79
5.4.16	0.003	0.037	19.03
5.4.15	0.000	0.043	19.29
5.4.14	0.130	0.043	16.50
5.4.13	0.173	0.037	16.52
5.4.12	0.173	0.047	16.34
5.4.11	0.160	0.040	16.45
5.4.10	0.177	0.047	16.37
5.4.9	0.143	0.037	16.59
5.4.8	0.147	0.033	16.57
5.4.7	0.160	0.023	16.46
5.4.6	0.147	0.037	16.52
5.4.5	0.147	0.037	16.43
5.4.4	0.170	0.030	16.55
5.4.3	0.170	0.033	16.37
5.4.2	0.160	0.027	16.54
5.4.1	0.157	0.037	16.37
5.4.0	0.143	0.037	15.80
5.3.29	0.170	0.043	14.61
5.3.28	0.170	0.037	14.64
5.3.27	0.147	0.033	14.79
5.3.26	0.157	0.043	14.62
5.3.25	0.173	0.047	14.55
5.3.24	0.157	0.047	14.64
5.3.23	0.153	0.037	14.55
5.3.22	0.163	0.033	14.63
5.3.21	0.157	0.030	14.67
5.3.20	0.160	0.047	14.54
5.3.19	0.140	0.040	14.57
5.3.18	0.173	0.043	14.60
5.3.17	0.173	0.043	14.71
5.3.16	0.170	0.047	14.84
5.3.15	0.150	0.033	14.52
5.3.14	0.177	0.037	14.55
5.3.13	0.173	0.043	14.73
5.3.12	0.170	0.043	14.71
5.3.11	0.167	0.037	14.82
5.3.10	0.170	0.047	14.12
5.3.9	0.157	0.043	14.07
5.3.8	0.160	0.043	13.95
5.3.7	0.150	0.037	13.95
5.3.6	0.173	0.043	14.06
5.3.5	0.070	0.050	14.06
5.3.4	0.000	0.073	13.90
5.3.3	0.003	0.060	14.16
5.3.2	0.007	0.070	13.70
5.3.1	0.173	0.037	13.61
5.3.0	0.173	0.037	13.78
5.2.17	0.147	0.037	11.11
5.2.16	0.143	0.033	11.10
5.2.15	0.150	0.040	11.08
5.2.14	0.127	0.037	11.15
5.2.13	0.123	0.017	11.36
5.2.12	0.140	0.040	11.21
5.2.11	0.127	0.027	11.11
5.2.10	0.107	0.027	11.22
5.2.9	0.127	0.030	11.19
5.2.8	0.073	0.033	11.04
5.2.7	0.000	0.037	11.21
5.2.6	0.007	0.033	11.23
5.2.5	0.047	0.057	11.06
5.2.4	0.107	0.023	10.94
5.2.3	0.100	0.030	11.08
5.2.2	0.107	0.033	11.05
5.2.1	0.117	0.030	10.80
5.2.0	0.103	0.023	10.68
5.1.6	0.117	0.033	10.13
5.1.5	0.130	0.023	10.16
5.1.4	0.097	0.030	9.91
5.1.3	0.107	0.027	10.33
5.1.2	0.103	0.027	10.46
5.1.1	0.107	0.023	10.18
5.1.0	0.103	0.027	9.96
5.0.5	0.053	0.023	8.56
5.0.4	0.060	0.023	8.56
5.0.3	0.040	0.033	8.56
5.0.2	0.053	0.017	8.56
5.0.1	0.053	0.027	8.56
5.0.0	0.043	0.027	8.56
4.4.9	0.000	0.017	8.56
4.4.8	0.003	0.013	8.56
4.4.7	0.000	0.020	8.56
4.4.6	0.003	0.017	8.56
4.4.5	0.000	0.017	8.56
4.4.4	0.000	0.023	8.56
4.4.3	0.003	0.013	8.56
4.4.2	0.013	0.023	8.56
4.4.1	0.047	0.020	8.56
4.4.0	0.053	0.023	8.56
4.3.11	0.057	0.017	8.56
4.3.10	0.063	0.023	8.56
4.3.9	0.057	0.013	8.56
4.3.8	0.050	0.023	8.56
4.3.7	0.050	0.017	8.56
4.3.6	0.057	0.020	8.56
4.3.5	0.050	0.017	8.56
4.3.4	0.053	0.020	8.56
4.3.3	0.023	0.017	8.56
4.3.2	0.023	0.017	8.56
4.3.1	0.023	0.017	8.56
4.3.0	0.027	0.013	8.56

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