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@ 2018-09-25T03:45:49Z

<?php

$area_elements = ['EC1 2AY', 'EC3 4XW'];

foreach($area_elements as &$v){ 
  $v = substr($v, 0, -4); 
}

print_r($area_elements);

Output
Performance
VLD
References
Branches

substr: documentation ( source)
print_r: documentation ( source)

preferences:dark modelive preview

60.91 ms | 402 KiB | 5 Q