The difference between 0 and null in php. As a qualified php programmer, some basic knowledge must be known, such as the difference between 0 and null. for this difference, we will perform a simple analysis using several instances, as a qualified php programmer, some basic knowledge must be known, such as the difference between 0 and null. for this difference, we will perform a simple analysis using several instances, the principle can only be explained. readers can learn it by themselves.
In php, 0 is null; // output} if ($ test = '') {echo'
In php, 0 is NULL; // not output} if ($ test = NULL) {echo'
In php, 0 is NULL; // output} if ($ test = NULL) {echo'
In php, 0 is null; // not output} if ($ test = false) {echo'
In php, 0 is null; // output} if ($ test = false) {echo'
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