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<?php $json = '[{"size":30487684,"0":30487684,"path":"\/var\/lib\/ReproConnect\/Planrooms\/www.msabcplanroom.net\/share\/jobs\/attala_education_center_holmes_community_college\/plan\/architectural\/AD102.PDF","1":"\/var\/lib\/ReproConnect\/Planrooms\/www.msabcplanroom.net\/share\/jobs\/attala_education_center_holmes_community_college\/plan\/architectural\/AD102.PDF"},{"size":30261679,"0":30261679,"path":"\/var\/lib\/ReproConnect\/Planrooms\/www.msabcplanroom.net\/share\/jobs\/9485_old-river-water-association-2015-water-system-improveme\/plan\/60115_plans\/Sheet L1.pdf","1":"\/var\/lib\/ReproConnect\/Planrooms\/www.msabcplanroom.net\/share\/jobs\/9485_old-river-water-association-2015-water-system-improveme\/plan\/60115_plans\/Sheet L1.pdf"},{"size":30239322,"0":30239322,"path":"\/var\/lib\/ReproConnect\/Planrooms\/www.msabcplanroom.net\/share\/jobs\/9485_old-river-water-association-2015-water-system-improveme\/plan\/60115_plans\/L1.pdf","1":"\/var\/lib\/ReproConnect\/Planrooms\/www.msabcplanroom.net\/share\/jobs\/9485_old-river-water-association-2015-water-system-improveme\/plan\/60115_plans\/L1.pdf"},{"size":30112894,"0":30112894,"path":"\/var\/lib\/ReproConnect\/Planrooms\/www.msabcplanroom.net\/share\/jobs\/new_medical_office_and_clinic_facility_flowood\/plan\/plans\/0010 L3-0 Grading Plan.pdf","1":"\/var\/lib\/ReproConnect\/Planrooms\/www.msabcplanroom.net\/share\/jobs\/new_medical_office_and_clinic_facility_flowood\/plan\/plans\/0010 L3-0 Grading Plan.pdf"},{"size":30003027,"0":30003027,"path":"\/var\/lib\/ReproConnect\/Planrooms\/www.msabcplanroom.net\/share\/jobs\/government_street_improvements__pedestrian_bridge__rebid\/plan\/plans\/03.pdf","1":"\/var\/lib\/ReproConnect\/Planrooms\/www.msabcplanroom.net\/share\/jobs\/government_street_improvements__pedestrian_bridge__rebid\/plan\/plans\/03.pdf"}]'; $array = json_decode($json, true); usort($array, function($a, $b) { return $a['size'] < $b['size']; }); print_r($array);