How does PHP get rid of 0 after the decimal point

How PHP removes 0 after the decimal point


How PHP removes 0 after the decimal point


The existing decimal 2002.001 uses PHP to remove the 1 preceding the decimal point from 0. namely: 2002.1

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What's the rule?
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It's gone, and the value has changed.
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PHP code

 $num =explode (".", "2002.001"); $num [1]=str_replace ( 0, "", $num [1]); Echo implode (".", $num); 
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 is handled as a character, but 
 
   
   

    
     PHP code 
    
    
 $str =" 2002.001.002.12.05 "; Echo preg_replace ('/(? <=\.) [0]+/', ' ', $str];//output 2002.1.2.12.5 
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 Remove 0, do not change the number value, the number is still valid 
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 Use the Intval function to 
 
 Echo intval (7533.725548); 
 
 Echo intval (7533.225548); 
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 Your clear needs! Maybe you're thinking the final result is the year of the Year "2012.2" 
 
 But when you save the data, there is an inexplicable 2 in front of the 0,right???

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 Regular matches 
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