Online PHP editor | perf for 9h3EK

@ 2022-03-27T14:27:46Z

<?php

// https://github.com/onlinecity/php-smpp/blob/master/gsmencoder.class.php

class GsmEncoder
{
	
	/**
	 * Encode an UTF-8 string into GSM 03.38
	 * Since UTF-8 is largely ASCII compatible, and GSM 03.38 is somewhat compatible, unnecessary conversions are removed.
	 * Specials chars such as € can be encoded by using an escape char \x1B in front of a backwards compatible (similar) char.
	 * UTF-8 chars which doesn't have a GSM 03.38 equivalent is replaced with a question mark. 
	 * UTF-8 continuation bytes (\x08-\xBF) are replaced when encountered in their valid places, but 
	 * any continuation bytes outside of a valid UTF-8 sequence is not processed.
	 *
	 * @param string $string
	 * @return string
	 */
	public static function utf8_to_gsm0338($string)
	{
		$dict = array(
			'@' => "\x00", '£' => "\x01", '$' => "\x02", '¥' => "\x03", 'è' => "\x04", 'é' => "\x05", 'ù' => "\x06", 'ì' => "\x07", 'ò' => "\x08", 'Ç' => "\x09", 'Ø' => "\x0B", 'ø' => "\x0C", 'Å' => "\x0E", 'å' => "\x0F",
			'Δ' => "\x10", '_' => "\x11", 'Φ' => "\x12", 'Γ' => "\x13", 'Λ' => "\x14", 'Ω' => "\x15", 'Π' => "\x16", 'Ψ' => "\x17", 'Σ' => "\x18", 'Θ' => "\x19", 'Ξ' => "\x1A", 'Æ' => "\x1C", 'æ' => "\x1D", 'ß' => "\x1E", 'É' => "\x1F",
			// all \x2? removed
			// all \x3? removed
			// all \x4? removed
			'Ä' => "\x5B", 'Ö' => "\x5C", 'Ñ' => "\x5D", 'Ü' => "\x5E", '§' => "\x5F",
			'¿' => "\x60",
			'ä' => "\x7B", 'ö' => "\x7C", 'ñ' => "\x7D", 'ü' => "\x7E", 'à' => "\x7F",
			'^' => "\x1B\x14", '{' => "\x1B\x28", '}' => "\x1B\x29", '\\' => "\x1B\x2F", '[' => "\x1B\x3C", '~' => "\x1B\x3D", ']' => "\x1B\x3E", '|' => "\x1B\x40", '€' => "\x1B\x65"
		);
		$converted = strtr($string, $dict);
		
		// Replace unconverted UTF-8 chars from codepages U+0080-U+07FF, U+0080-U+FFFF and U+010000-U+10FFFF with a single ?
		return preg_replace('/([\\xC0-\\xDF].)|([\\xE0-\\xEF]..)|([\\xF0-\\xFF]...)/m','?',$converted);
	}
	
	/**
	 * Count the number of GSM 03.38 chars a conversion would contain.
	 * It's about 3 times faster to count than convert and do strlen() if conversion is not required.
	 * 
	 * @param string $utf8String
	 * @return integer
	 */
	public static function countGsm0338Length($utf8String)
	{
		$len = mb_strlen($utf8String,'utf-8');
		$len += preg_match_all('/[\\^{}\\\~€|\\[\\]]/mu',$utf8String,$m);
		return $len;
	}

	/**
	 * Pack an 8-bit string into 7-bit GSM format
	 * Returns the packed string in binary format
	 *
	 * @param string $data
	 * @return string
	 */
	public static function pack7bit($data)
	{
		$l = strlen($data);
		$currentByte = 0;
		$offset = 0;
		$packed = '';
		for ($i = 0; $i < $l; $i++) {
			// cap off any excess bytes
			$septet = ord($data[$i]) & 0x7f;
			// append the septet and then cap off excess bytes
			$currentByte |= ($septet << $offset) & 0xff;
			// update offset
			$offset += 7;

			if ($offset > 7) {
				// the current byte is full, add it to the encoded data.
				$packed .= chr($currentByte);
				// shift left and append the left shifted septet to the current byte
				$currentByte = $septet = $septet >> (7 - ($offset - 8 ));
				// update offset
				$offset -= 8; // 7 - (7 - ($offset - 8))
			}
		}
		if ($currentByte > 0) $packed .= chr($currentByte); // append the last byte

		return $packed;
	}
}

$resultat = GsmEncoder::utf8_to_gsm0338("abc é œ ♥");
var_export($resultat);
echo "\n";
var_export(unpack("H*", $resultat));

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)
8.4.13	0.011	0.010	18.00
8.4.12	0.007	0.002	20.60
8.4.11	0.013	0.008	20.49
8.4.10	0.010	0.012	18.61
8.4.9	0.013	0.006	22.40
8.4.8	0.005	0.005	18.73
8.4.7	0.005	0.003	18.94
8.4.6	0.010	0.011	18.85
8.4.5	0.014	0.008	18.41
8.4.4	0.010	0.010	19.64
8.4.3	0.007	0.004	18.76
8.4.2	0.010	0.000	18.09
8.4.1	0.013	0.003	18.75
8.3.25	0.009	0.010	19.11
8.3.24	0.009	0.011	16.81
8.3.23	0.013	0.006	16.84
8.3.22	0.006	0.002	19.14
8.3.21	0.008	0.009	16.90
8.3.20	0.003	0.005	16.77
8.3.19	0.012	0.006	17.19
8.3.18	0.008	0.003	19.02
8.3.17	0.006	0.012	18.39
8.3.16	0.009	0.009	16.74
8.3.15	0.008	0.000	17.04
8.3.14	0.004	0.004	17.00
8.3.13	0.005	0.003	18.55
8.3.12	0.003	0.006	20.63
8.3.11	0.004	0.004	17.05
8.3.10	0.009	0.000	16.90
8.3.9	0.003	0.006	26.77
8.3.8	0.000	0.012	16.63
8.3.7	0.012	0.003	17.00
8.3.6	0.009	0.009	17.00
8.3.5	0.006	0.015	20.28
8.3.4	0.004	0.011	20.32
8.3.3	0.011	0.003	19.21
8.3.2	0.005	0.003	24.18
8.3.1	0.000	0.008	24.66
8.3.0	0.004	0.004	26.16
8.2.29	0.011	0.005	20.25
8.2.28	0.010	0.009	18.80
8.2.27	0.011	0.007	16.77
8.2.26	0.006	0.003	16.89
8.2.25	0.015	0.004	17.17
8.2.24	0.005	0.005	17.00
8.2.23	0.009	0.000	20.94
8.2.22	0.007	0.003	24.06
8.2.21	0.008	0.000	26.77
8.2.20	0.006	0.003	16.75
8.2.19	0.007	0.014	16.63
8.2.18	0.018	0.000	25.92
8.2.17	0.007	0.010	19.16
8.2.16	0.013	0.003	22.96
8.2.15	0.000	0.008	25.66
8.2.14	0.002	0.005	24.66
8.2.13	0.004	0.004	26.16
8.2.12	0.004	0.004	19.95
8.2.11	0.008	0.000	22.11
8.2.10	0.004	0.009	18.04
8.2.9	0.000	0.008	19.26
8.2.8	0.000	0.008	17.97
8.2.7	0.005	0.003	17.63
8.2.6	0.004	0.004	17.93
8.2.5	0.004	0.004	18.07
8.2.4	0.005	0.003	18.22
8.2.3	0.003	0.005	18.40
8.2.2	0.002	0.005	20.50
8.2.1	0.004	0.004	18.19
8.2.0	0.000	0.007	19.36
8.1.33	0.009	0.011	18.15
8.1.32	0.013	0.005	16.32
8.1.31	0.004	0.004	16.85
8.1.30	0.009	0.000	20.16
8.1.29	0.000	0.010	30.84
8.1.28	0.011	0.004	25.92
8.1.27	0.000	0.009	23.99
8.1.26	0.008	0.000	26.35
8.1.25	0.003	0.006	28.09
8.1.24	0.006	0.003	22.48
8.1.23	0.000	0.012	19.12
8.1.22	0.003	0.006	17.74
8.1.21	0.008	0.000	18.77
8.1.20	0.000	0.009	17.38
8.1.19	0.000	0.008	17.48
8.1.18	0.000	0.008	18.10
8.1.17	0.006	0.003	18.76
8.1.16	0.004	0.004	18.82
8.1.15	0.008	0.000	18.78
8.1.14	0.004	0.007	17.51
8.1.13	0.007	0.000	18.77
8.1.12	0.000	0.007	17.58
8.1.11	0.004	0.004	17.59
8.1.10	0.004	0.004	17.61
8.1.9	0.004	0.004	17.48
8.1.8	0.000	0.008	17.54
8.1.7	0.000	0.008	17.49
8.1.6	0.000	0.009	17.73
8.1.5	0.004	0.004	17.73
8.1.4	0.007	0.007	17.67
8.1.3	0.008	0.004	17.85
8.1.2	0.018	0.003	17.83
8.1.1	0.006	0.006	17.64
8.1.0	0.025	0.000	17.77
8.0.30	0.000	0.007	18.77
8.0.29	0.004	0.004	17.00
8.0.28	0.000	0.008	18.52
8.0.27	0.000	0.007	17.05
8.0.26	0.003	0.003	18.54
8.0.25	0.004	0.004	17.15
8.0.24	0.007	0.000	17.04
8.0.23	0.007	0.000	17.08
8.0.22	0.003	0.003	16.93
8.0.21	0.005	0.003	17.10
8.0.20	0.005	0.005	17.13
8.0.19	0.000	0.008	17.12
8.0.18	0.000	0.007	17.07
8.0.17	0.007	0.007	16.85
8.0.16	0.012	0.006	16.81
8.0.15	0.015	0.006	16.95
8.0.14	0.017	0.003	16.93
8.0.13	0.019	0.000	16.89
8.0.12	0.013	0.007	16.85
8.0.11	0.016	0.003	16.99
8.0.10	0.014	0.005	17.02
8.0.9	0.024	0.000	16.95
8.0.8	0.024	0.000	17.04
8.0.7	0.012	0.008	17.01
8.0.6	0.009	0.009	16.98
8.0.5	0.018	0.003	17.02
8.0.3	0.014	0.007	16.95
8.0.2	0.012	0.008	17.00
8.0.1	0.014	0.007	17.18
7.4.33	0.000	0.005	15.55
7.4.32	0.003	0.003	16.87
7.4.30	0.004	0.004	16.72
7.4.29	0.003	0.003	16.61
7.4.28	0.007	0.004	16.74
7.4.27	0.014	0.010	16.73
7.4.26	0.020	0.003	16.78
7.4.25	0.025	0.000	16.64
7.4.24	0.020	0.007	16.86
7.4.23	0.015	0.006	16.84
7.4.22	0.019	0.000	16.58
7.4.21	0.015	0.003	16.76
7.4.20	0.019	0.000	16.75
7.4.19	0.020	0.000	16.89
7.4.18	0.014	0.007	16.77
7.4.16	0.010	0.010	16.74
7.4.15	0.015	0.004	16.71
7.4.14	0.015	0.004	16.68
7.4.13	0.012	0.006	16.85
7.4.12	0.009	0.009	16.81
7.4.11	0.006	0.011	16.84
7.4.10	0.014	0.006	16.84
7.4.9	0.016	0.003	16.68
7.4.8	0.011	0.006	16.78
7.4.7	0.019	0.000	16.83
7.4.6	0.016	0.003	16.61
7.4.5	0.013	0.008	16.65
7.4.4	0.003	0.006	16.79
7.4.3	0.009	0.006	16.86
7.4.2	0.014	0.004	16.68
7.4.1	0.005	0.005	16.72
7.4.0	0.011	0.000	16.76

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