Online PHP editor | output for 5RnUC

@ 2016-06-18T16:09:44Z

<?php

$second_names = ['Cars', 'Bikes', 'Trucks'];
$premiumCatArraySets = [
	[
		'primary-category'   => 'Automobiles',
		'secondary-category' => 'Cars',
		'tertiary-category'  => 'Fiat Punto'
	],
	[
		'primary-category'   => 'Automobiles',
		'secondary-category' => 'Cars',
		'tertiary-category'  => 'BMW'
	],
	[
		'primary-category'   => 'Automobiles',
		'secondary-category' => 'Bikes',
		'tertiary-category'  => 'Honda'
	],
	[
		'primary-category'   => 'Automobiles',
		'secondary-category' => 'Trucks',
		'tertiary-category'  => 'Iveco'
	]
	,
	[
		'primary-category'   => 'Automobiles',
		'secondary-category' => 'Cars',
		'tertiary-category'  => 'Mercedes'
	]
	,
	[
		'primary-category'   => 'Automobiles',
		'secondary-category' => 'Cars',
		'tertiary-category'  => 'Toyota'
	]
];

$output = [];
foreach($premiumCatArraySets as $key => $value){	
	if(in_array($value["secondary-category"],$second_names)){
		if(!isset($output[$value["secondary-category"]])){
			$output[$value["secondary-category"]]  = [];
		}		 
		$output[$value["secondary-category"]][] = $value["tertiary-category"];
	}
}
foreach($output as $key => $value){	
	echo '<h2>'.$key."</h2>";
		echo implode(",",$value)."<br/>";
}

print_r($output);

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 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.28, 8.4.1 - 8.4.14, 8.5.0: <h2>Cars</h2>Fiat Punto,BMW,Mercedes,Toyota<br/><h2>Bikes</h2>Honda<br/><h2>Trucks</h2>Iveco<br/>Array ( [Cars] => Array ( [0] => Fiat Punto [1] => BMW [2] => Mercedes [3] => Toyota ) [Bikes] => Array ( [0] => Honda ) [Trucks] => Array ( [0] => Iveco ) )
Output for 8.4.15: /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15)
Process exited with code 1.
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/5RnUC on line 3
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/5RnUC on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4: Parse error: parse error in /in/5RnUC on line 3
Process exited with code 255.

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