During the development process using ThinkPHP5, everyone may have encountered various problems, the most common of which is grammatical errors. Among them, there are sometimes some minor problems with the use of braces in code blocks. This article will focus on the thinkphp5 brace error and its solution.

1. Problem Description

During the development process, we sometimes encounter errors caused by missing braces outside or inside code blocks.

The following is an example:

????if($file->validate(['size'=>2048000,'ext'=>'jpg,png,gif'])->move($path)){
??????return?json_encode(['code'?=>?1,?'msg'?=>?'上傳成功']);
????}
????else
??????return?json_encode(['code'?=>?0,?'msg'?=>?'上傳失敗']);

In this code, due to the lack of braces in the else statement, the system cannot correctly identify this statement during parsing, causing the program to appear. mistake.

2. Solution

When solving the problem of brace errors, we only need to ensure that the braces inside and outside the code block appear in pairs. A more specific solution is as follows:

1) Ensure that the braces outside the code block exist

in the following code:

????if($file->validate(['size'=>2048000,'ext'=>'jpg,png,gif'])->move($path)){
??????return?json_encode(['code'?=>?1,?'msg'?=>?'上傳成功']);
????}
????else
??????return?json_encode(['code'?=>?0,?'msg'?=>?'上傳失敗']);

We can else## Adding curly brackets to the # statement can avoid errors. The code is as follows:

????if($file->validate(['size'=>2048000,'ext'=>'jpg,png,gif'])->move($path)){
??????return?json_encode(['code'?=>?1,?'msg'?=>?'上傳成功']);
????}
????else?{
??????return?json_encode(['code'?=>?0,?'msg'?=>?'上傳失敗']);
????}

2) Ensure that the curly brackets within the code block exist

In the following code:

????$data?=?[
??????['id'?=>?1,?'name'?=>?'小明'],
??????['id'?=>?2,?'name'?=>?'小紅'],
??????['id'?=>?3,?'name'?=>?'小剛']
????]
????
????foreach($data?as?$val)
??????$name?=?$val['name'];
??????echo?$name;

We can do this in the

foreach statement Add curly brackets to the code block to avoid errors. The code is as follows:

????$data?=?[
??????['id'?=>?1,?'name'?=>?'小明'],
??????['id'?=>?2,?'name'?=>?'小紅'],
??????['id'?=>?3,?'name'?=>?'小剛']
????]
????
????foreach($data?as?$val)?{
??????$name?=?$val['name'];
??????echo?$name;
????}

Summary

In the process of writing code using ThinkPHP5, syntax errors are inevitable. When dealing with brace errors, we only need to follow the above solutions to ensure that braces inside and outside the code block appear in pairs to effectively avoid errors.

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