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<?php $string = 'UA-12345-1 G-J2DV45G NOPE DC-JGWWE32 AW-GER322 NAH-MATE GTM-5TDMDSZ G-WIZ'; $trackingPrefixes = ['UA', 'YT', 'MO', 'G', 'DC', 'AW']; preg_match_all( '/\b (?: (?:' . implode('|', $trackingPrefixes) . ')-[A-Z\d]{4,10}(?:-[1-9]\d{0,3})? #Tracker Ids | GTM-[A-Z\d]+ #Google Tag Manager Ids ) \b/x', $string, $m ); var_export($m[0]);
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.21, 8.5.0 - 8.5.7
array ( 0 => 'UA-12345-1', 1 => 'G-J2DV45G', 2 => 'DC-JGWWE32', 3 => 'AW-GER322', 4 => 'GTM-5TDMDSZ', )
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/LXZh3 on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/LXZh3 on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/LXZh3 on line 5
Process exited with code 255.

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