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<?php function ad($a=''){ if(is_int($a)){ echo $a.' >> int<br>'; }else{ echo $a.' >> not<br>'; } } ad(); ad(2); ad('2'); ad(2.5); ad(0); ad(1);
Output for git.master, git.master_jit, rfc.property-hooks
>> not<br>2 >> int<br>2 >> not<br>2.5 >> not<br>0 >> int<br>1 >> int<br>

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